US2659230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coincidental door locking system
Assignee: Individual
•
Filing: 1949-07-07
•
Granted: 1953-11-17
•
Expires: 1969-07-07
Abstract
No abstract record available.
Inventors
- 👤 Burnie J Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:22
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/46; E05B77/48; Y; Y10; Y10S; Y10S292/00; Y10S292/37; Y10T; Y10T70/00; Y10T70/60; Y10T70/625; Y10T70/65
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1059952A
Cited
US2039873A
Cited
US2001787A
Cited
US2014363A
Cited
US2221181A
Cited
US2234810A
Cited
US2249018A
Cited
US2246781A
Cited
US2329309A
Cited
US2450372A
Cited
US2529421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |