DONALD R MIDDLETON
DONALD R MActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2713140A | Regulated rectifying apparatus | Expired / Lapsed | 1954-02-19 | 1955-07-12 | 0 | Details |
| US2688721A | Voltage regulation | Expired / Lapsed | 1948-06-29 | 1954-09-07 | 0 | Details |
| US2630557A | Regulated rectifying apparatus | Expired / Lapsed | 1951-07-11 | 1953-03-03 | 0 | Details |
| US2511219A | Voltage regulator | Expired / Lapsed | 1948-04-17 | 1950-06-13 | 0 | Details |
| US2466874A | Voltage regulation | Expired / Lapsed | 1945-01-31 | 1949-04-12 | 0 | Details |
| US2435572A | Voltage regulation | Expired / Lapsed | 1945-01-31 | 1948-02-10 | 0 | Details |
| US2413941A | Voltage regulation | Expired / Lapsed | 1945-01-31 | 1947-01-07 | 0 | Details |
| US2409610A | Voltage regulation | Expired / Lapsed | 1945-01-31 | 1946-10-22 | 0 | Details |