Patelhold Patenverwertungs and Elektro-Holding AG
PatelholdActive Patents
0
Total Holdings
20
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0028272A1 | Method and device for the transmission of enciphered inform… | Expired / Lapsed | 1979-12-03 | — | 0 | Details |
| FR2344855A1 | OPTICAL FIBER T-COUPLER | Expired / Lapsed | 1977-03-14 | — | 0 | Details |
| DE1942817B2 | PROCEDURE FOR DIRECT CHANNEL CLEANING FOR OPERATING ADDRESS… | Expired / Lapsed | 1969-08-22 | — | 0 | Details |
| GB599935A | An improved method for the heat treatment of dielectric bod… | Expired / Lapsed | 1945-09-03 | — | 0 | Details |
| GB599372A | Device for surface hardening cylindrical metallic elements … | Expired / Lapsed | 1944-05-25 | — | 0 | Details |
| DE2400491C2 | Fiber network for the optoelectronic transmission of data | Expired / Lapsed | 1974-01-05 | 1989-02-02 | 0 | Details |
| US4027153A | Fibre network having a passive optical coupling element for… | Expired / Lapsed | 1974-11-18 | 1977-05-31 | 18 | Details |
| US3773977A | Method of enciphered information transmission by time-inter… | Expired / Lapsed | 1971-06-21 | 1973-11-20 | 17 | Details |
| US3480889A | Temperature stabilized cavity resonator | Expired / Lapsed | 1967-07-13 | 1969-11-25 | 0 | Details |
| US3164777A | Means for the production of a voltage which depends upon th… | Expired / Lapsed | 1960-02-09 | 1965-01-05 | 2 | Details |
| US3133991A | Method and apparatus for masking communication signals | Expired / Lapsed | 1959-08-21 | 1964-05-19 | 2 | Details |
| US2887413A | Thermionic cathode for electron tubes and method for produc… | Expired / Lapsed | 1956-11-19 | 1959-05-19 | 2 | Details |
| US2597506A | Ultra-short wave electron tube | Expired / Lapsed | 1945-11-14 | 1952-05-20 | 0 | Details |
| US2579630A | Microwave generator | Expired / Lapsed | 1948-07-15 | 1951-12-25 | 0 | Details |
| US2567339A | Electron tube for generating ultra-short electromagnetic os… | Expired / Lapsed | 1946-09-11 | 1951-09-11 | 0 | Details |
| US2554188A | Radio control of flying objects | Expired / Lapsed | 1948-08-09 | 1951-05-22 | 0 | Details |
| US2474354A | Automatic frequency control circuits | Expired / Lapsed | 1943-06-04 | 1949-06-28 | 0 | Details |
| US2436066A | Transmitter with anode voltage modulation | Expired / Lapsed | 1945-02-16 | 1948-02-17 | 0 | Details |
| US2364210A | Method and apparatus for scrambling signals | Expired / Lapsed | 1942-05-08 | 1944-12-05 | 0 | Details |
| US2312897A | Method of transmitting signals | Expired / Lapsed | 1940-10-09 | 1943-03-02 | 0 | Details |