Patent US2793291A successfully refreshed from Google Patents.
US2793291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus using oscillatory circuits
Assignee: General Controls Co
•
Filing: 1950-07-08
•
Granted: 1957-05-21
•
Expires: 1970-07-08
Abstract
No abstract record available.
Inventors
- 👤 Donald J O'connell
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:12
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/2236; G05D23/2237
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2007714A
Cited
US2142059A
Cited
US2085195A
Cited
US2111086A
Cited
US2228163A
Cited
US2150440A
Cited
US2225700A
Cited
US2313917A
Cited
US2228997A
Cited
US2327690A
Cited
US2414314A
Cited
US2385530A
Cited
US2370818A
Cited
US2369953A
Cited
US2415189A
Cited
US2590826A
Cited
US2554124A
Cited
US2586686A
Cited
US2546784A
Cited
US2542638A
Cited
US2557168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |