Int Electronics Co
Int ElectrActive Patents
0
Total Holdings
12
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2712572A | Superimposed plural recording | Expired / Lapsed | 1947-03-27 | 1955-07-05 | 0 | Details |
| US2698359A | Method and apparatus for making magnetic tape records | Expired / Lapsed | 1947-04-03 | 1954-12-28 | 0 | Details |
| US2694110A | Equipment for use with magnetic tape records | Expired / Lapsed | 1947-06-27 | 1954-11-09 | 0 | Details |
| US2668718A | Magnetic letterhead | Expired / Lapsed | 1947-03-27 | 1954-02-09 | 0 | Details |
| US2653819A | Magnetic recording system | Expired / Lapsed | 1947-04-10 | 1953-09-29 | 0 | Details |
| US2625611A | Magnetic recording and reproducing apparatus combined with … | Expired / Lapsed | 1946-12-11 | 1953-01-13 | 0 | Details |
| US2620404A | Driving and scanning mechanism for magnetic tape handling e… | Expired / Lapsed | 1949-07-07 | 1952-12-02 | 0 | Details |
| US2599314A | Low capacity switch | Expired / Lapsed | 1947-07-02 | 1952-06-03 | 0 | Details |
| US2581499A | Back-spacing device for dictating machines | Expired / Lapsed | 1947-03-27 | 1952-01-08 | 0 | Details |
| US2555110A | Magnetic head assembly | Expired / Lapsed | 1947-10-03 | 1951-05-29 | 0 | Details |
| US2542590A | Tape runout control for magnetic recorders | Expired / Lapsed | 1950-01-07 | 1951-02-20 | 0 | Details |
| US2530029A | Equalizer for supporting magnetic recording and erasing hea… | Expired / Lapsed | 1947-04-25 | 1950-11-14 | 0 | Details |