US1918979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock
Assignee: National Lock Co
•
Filing: 1930-12-15
•
Granted: 1933-07-18
•
Expires: 1950-12-15
Abstract
No abstract record available.
Inventors
- 👤 Edwin W North
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:55
CPC Classifications
E; E05; E05B; E05B29/00; E05B29/0013; E05B65/00; E05B65/44; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5009; Y10T70/5031; Y10T70/5058; Y10T70/5062; Y10T70/5093; Y10T70/5097; Y10T70/5102; Y10T70/5106; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5341
Claims Analysis
Total Claims: 0
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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) | 1936-07-17 | 1937-01-16 | 1937-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-17 | 1941-01-16 | 1941-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-17 | 1945-01-16 | 1945-07-18 | $7700.00 | Window Closed / Lapsed |