US2505401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door locking system
Assignee: Empire Electric Brake Co
•
Filing: 1947-04-03
•
Granted: 1950-04-25
•
Expires: 1967-04-03
Abstract
No abstract record available.
Inventors
- 👤 Jeannot G Ingres
- 👤 Jr David T Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:15
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/46; E05B77/48; Y; Y10; Y10S; Y10S292/00; Y10S292/24; Y10T; Y10T70/00; Y10T70/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1995889A
Cited
US2056750A
Cited
US2095081A
Cited
US2189748A
Cited
US2276019A
Cited
US2340424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |