US2645516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: Individual
•
Filing: 1949-12-16
•
Granted: 1953-07-14
•
Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Neil F Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/02; E05B15/0205; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/68; Y10T292/688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194636A
Cited
US1318988A
Cited
US913410A
Cited
US1186315A
Cited
GB165139A
Cited
US1497044A
Cited
US2446206A
Cited
US2535444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |