US2637578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically controlled lock
Assignee: Individual
•
Filing: 1951-05-28
•
Granted: 1953-05-05
•
Expires: 1971-05-28
Abstract
No abstract record available.
Inventors
- 👤 Rafael C Gaona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00658; G07C9/00674; G07C9/0069; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T292/1022; Y10T292/1028; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7068; Y10T70/7124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1833948A
Cited
US1736761A
Cited
US1844731A
Cited
US1992541A
Cited
US1948217A
Cited
US1963875A
Cited
US2190299A
Cited
US2499727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |