United States, WAR, Secretary of
United StaActive Patents
0
Total Holdings
60
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2689303A | Antenna array | Expired / Lapsed | 1946-05-24 | 1954-09-14 | 0 | Details |
| US2679043A | Beacon receiver | Expired / Lapsed | 1946-05-21 | 1954-05-18 | 0 | Details |
| US2678440A | Airborne moving target indicating radar system | Expired / Lapsed | 1946-03-26 | 1954-05-11 | 0 | Details |
| US2677758A | Electrical tracking circuit | Expired / Lapsed | 1945-12-10 | 1954-05-04 | 0 | Details |
| US2647240A | Radio-frequency transmission line switching system | Expired / Lapsed | 1946-02-05 | 1953-07-28 | 0 | Details |
| US2646561A | Moving object pulse echo selection circuit for radar systems | Expired / Lapsed | 1946-04-30 | 1953-07-21 | 0 | Details |
| US2646549A | Coaxial line terminating device | Expired / Lapsed | 1946-01-07 | 1953-07-21 | 0 | Details |
| US2644156A | Range selector circuit | Expired / Lapsed | 1945-03-22 | 1953-06-30 | 0 | Details |
| US2642367A | Method of protecting lenses | Expired / Lapsed | 1950-03-27 | 1953-06-16 | 2 | Details |
| US2639377A | Pulse analyzer | Expired / Lapsed | 1946-04-30 | 1953-05-19 | 0 | Details |
| US2639423A | Radar contrast control system | Expired / Lapsed | 1945-08-01 | 1953-05-19 | 0 | Details |
| US2597349A | Radio navigational device | Expired / Lapsed | 1945-10-19 | 1952-05-20 | 0 | Details |
| US2597322A | Pulse generator circuit | Expired / Lapsed | 1945-09-14 | 1952-05-20 | 0 | Details |
| US2597297A | Test set for pulse-echo radio locators | Expired / Lapsed | 1945-04-18 | 1952-05-20 | 0 | Details |
| US2597353A | Sweep and range circuit | Expired / Lapsed | 1945-03-22 | 1952-05-20 | 0 | Details |
| US2597360A | Electron ratchet tube | Expired / Lapsed | 1944-11-17 | 1952-05-20 | 0 | Details |
| US2593120A | Wave guide transmission system | Expired / Lapsed | 1945-03-08 | 1952-04-15 | 0 | Details |
| US2589843A | Ultrahigh-frequency mixing circuits | Expired / Lapsed | 1946-01-03 | 1952-03-18 | 0 | Details |
| US2589852A | Mechanical tracking device | Expired / Lapsed | 1945-08-08 | 1952-03-18 | 0 | Details |
| US2589813A | Antenna positioning system | Expired / Lapsed | 1945-05-30 | 1952-03-18 | 0 | Details |
| US2589833A | Pulse discriminator circuit | Expired / Lapsed | 1945-05-03 | 1952-03-18 | 0 | Details |
| US2585868A | Sector scanning radar device | Expired / Lapsed | 1945-08-20 | 1952-02-12 | 0 | Details |
| US2585855A | Radar ground-controlled approach system for aircraft | Expired / Lapsed | 1944-08-11 | 1952-02-12 | 0 | Details |
| US2512637A | Noise suppression circuit | Expired / Lapsed | 1945-08-10 | 1950-06-27 | 0 | Details |
| US2512257A | Water-resistant compound lens transparent to infrared | Expired / Lapsed | 1947-01-09 | 1950-06-20 | 2 | Details |
| US2512139A | Antenna | Expired / Lapsed | 1944-12-29 | 1950-06-20 | 0 | Details |
| US2512137A | Antenna | Expired / Lapsed | 1944-06-16 | 1950-06-20 | 0 | Details |
| US2510129A | Pulse generating circuit | Expired / Lapsed | 1942-11-28 | 1950-06-06 | 0 | Details |
| US2508562A | Position locating method | Expired / Lapsed | 1944-10-10 | 1950-05-23 | 0 | Details |
| US2508569A | Pulse shortening circuit | Expired / Lapsed | 1944-01-13 | 1950-05-23 | 0 | Details |
| US2507459A | Antiblurring device for aerial cameras | Expired / Lapsed | 1945-11-27 | 1950-05-09 | 0 | Details |
| US2507451A | Flight stabilizing control gyroscope | Expired / Lapsed | 1944-07-01 | 1950-05-09 | 0 | Details |
| US2506617A | Method of and apparatus for locating and tracking a distant… | Expired / Lapsed | 1938-06-23 | 1950-05-09 | 0 | Details |
| US2505515A | Compressional wave delay means | Expired / Lapsed | 1946-04-02 | 1950-04-25 | 0 | Details |
| US2505529A | Tunable magnetron | Expired / Lapsed | 1946-01-17 | 1950-04-25 | 0 | Details |
| US2505572A | Tuning unit | Expired / Lapsed | 1945-11-27 | 1950-04-25 | 0 | Details |
| US2505569A | Antenna | Expired / Lapsed | 1944-12-09 | 1950-04-25 | 0 | Details |
| US2501072A | Antenna housing | Expired / Lapsed | 1945-08-30 | 1950-03-21 | 0 | Details |
| US2501107A | Headband | Expired / Lapsed | 1944-05-27 | 1950-03-21 | 0 | Details |
| US2488315A | Exposure selecting device for X-ray apparatus | Expired / Lapsed | 1946-05-15 | 1949-11-15 | 0 | Details |
| US2486866A | Dual phototube X-ray timer for selective exposure of chest … | Expired / Lapsed | 1946-05-15 | 1949-11-01 | 0 | Details |
| US2485919A | Electrical circuit | Expired / Lapsed | 1945-11-06 | 1949-10-25 | 0 | Details |
| US2482544A | Pulse code operated electronic range indicator | Expired / Lapsed | 1945-05-02 | 1949-09-20 | 0 | Details |
| US2480199A | Reflector | Expired / Lapsed | 1945-07-09 | 1949-08-30 | 0 | Details |
| US2480208A | Radio distance and direction indicator | Expired / Lapsed | 1944-06-27 | 1949-08-30 | 0 | Details |
| US2448299A | Beam intensity control | Expired / Lapsed | 1946-03-29 | 1948-08-31 | 0 | Details |
| US2446835A | Compression-wave delay device | Expired / Lapsed | 1946-06-21 | 1948-08-10 | 0 | Details |
| US2446802A | Pulse shaping circuit | Expired / Lapsed | 1945-08-01 | 1948-08-10 | 0 | Details |
| US2446186A | Fan antenna with tail | Expired / Lapsed | 1944-12-04 | 1948-08-03 | 0 | Details |
| US2444460A | Remote-control system | Expired / Lapsed | 1946-02-05 | 1948-07-06 | 0 | Details |
| US2443629A | Releasable connecting mechanism | Expired / Lapsed | 1947-01-22 | 1948-06-22 | 0 | Details |
| US2441133A | Automatic weather data transmitting station unit | Expired / Lapsed | 1945-09-24 | 1948-05-11 | 0 | Details |
| US2441387A | Electronic squaring circuit | Expired / Lapsed | 1944-10-30 | 1948-05-11 | 0 | Details |
| US2439857A | Single knob oximeter having selective control means for mul… | Expired / Lapsed | 1947-04-04 | 1948-04-20 | 0 | Details |
| US2440210A | Antenna | Expired / Lapsed | 1946-03-26 | 1948-04-20 | 0 | Details |
| US2439321A | Electrical circuit | Expired / Lapsed | 1945-09-19 | 1948-04-06 | 0 | Details |
| US2439285A | Wave guide mode transformer | Expired / Lapsed | 1945-08-01 | 1948-04-06 | 0 | Details |
| US2439324A | Electrical circuit | Expired / Lapsed | 1945-08-01 | 1948-04-06 | 0 | Details |
| US2439313A | Electrical circuit | Expired / Lapsed | 1945-01-24 | 1948-04-06 | 0 | Details |
| US2437892A | Voltage control circuit | Expired / Lapsed | 1945-10-19 | 1948-03-16 | 0 | Details |