United States, WAR, Secretary of
United StaActive Patents
0
Total Holdings
30
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 |
| US2647240A | Radio-frequency transmission line switching system | Expired / Lapsed | 1946-02-05 | 1953-07-28 | 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 |
| 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 |
| 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 |
| US2589833A | Pulse discriminator circuit | Expired / Lapsed | 1945-05-03 | 1952-03-18 | 0 | Details |
| US2585855A | Radar ground-controlled approach system for aircraft | Expired / Lapsed | 1944-08-11 | 1952-02-12 | 0 | Details |
| US2512257A | Water-resistant compound lens transparent to infrared | Expired / Lapsed | 1947-01-09 | 1950-06-20 | 2 | Details |
| US2512137A | Antenna | Expired / Lapsed | 1944-06-16 | 1950-06-20 | 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 |
| US2505515A | Compressional wave delay means | Expired / Lapsed | 1946-04-02 | 1950-04-25 | 0 | Details |
| US2505572A | Tuning unit | Expired / Lapsed | 1945-11-27 | 1950-04-25 | 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 |
| 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 |
| US2439857A | Single knob oximeter having selective control means for mul… | Expired / Lapsed | 1947-04-04 | 1948-04-20 | 0 | Details |
| US2439324A | Electrical circuit | Expired / Lapsed | 1945-08-01 | 1948-04-06 | 0 | Details |
| US2439285A | Wave guide mode transformer | Expired / Lapsed | 1945-08-01 | 1948-04-06 | 0 | Details |
| US2437892A | Voltage control circuit | Expired / Lapsed | 1945-10-19 | 1948-03-16 | 0 | Details |