Telefunken AG
TelefunkenActive Patents
0
Total Holdings
13
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2212128A | Antenna | Expired / Lapsed | 1939-05-06 | 1940-08-20 | 0 | Details |
| US2202380A | Confined or space resonance antenna | Expired / Lapsed | 1937-11-11 | 1940-05-28 | 0 | Details |
| US2187575A | Antenna winch for aircraft | Expired / Lapsed | 1938-06-25 | 1940-01-16 | 0 | Details |
| US2153628A | Electron tube | Expired / Lapsed | 1936-03-17 | 1939-04-11 | 0 | Details |
| US2124404A | Television scanning system | Expired / Lapsed | 1934-03-08 | 1938-07-19 | 0 | Details |
| US2116717A | Distance and direction determining system | Expired / Lapsed | 1935-06-25 | 1938-05-10 | 0 | Details |
| US2116217A | Visual indicator for tuning means | Expired / Lapsed | 1935-09-19 | 1938-05-03 | 0 | Details |
| US2049677A | Heterodyne receiver | Expired / Lapsed | 1932-12-30 | 1936-08-04 | 0 | Details |
| US2042606A | Variable resistor unit | Expired / Lapsed | 1933-05-11 | 1936-06-02 | 0 | Details |
| US2027193A | Thermostat arrangement | Expired / Lapsed | 1933-09-15 | 1936-01-07 | 0 | Details |
| US2015178A | Method for the stabilization of electromagnetic oscillations | Expired / Lapsed | 1933-12-08 | 1935-09-24 | 0 | Details |
| US1994228A | Temperature control of piezo-electric crystal apparatus | Expired / Lapsed | 1932-02-16 | 1935-03-12 | 0 | Details |
| US1789369A | Means for indicating changes in gases | Expired / Lapsed | 1927-06-30 | 1931-01-20 | 0 | Details |