US1672901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-button catch
Assignee: National Lock Co
•
Filing: 1926-12-04
•
Granted: 1928-06-12
•
Expires: 1946-12-04
Abstract
No abstract record available.
Inventors
- 👤 Edwin W North
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:19
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/12; E05C3/16; E05C3/162; Y; Y10; Y10S; Y10S292/00; Y10S292/30; Y10S292/37; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/106
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-06-12 | 1931-12-12 | 1932-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-06-12 | 1935-12-12 | 1936-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-06-12 | 1939-12-12 | 1940-06-12 | $7700.00 | Window Closed / Lapsed |