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US1997526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device
Assignee: Individual
•
Filing: 1931-10-21
•
Granted: 1935-04-09
•
Expires: 1951-10-21
Abstract
No abstract record available.
Inventors
- 👤 Lejbowiez Ferdinand Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:54
CPC Classifications
E; E05; E05B; E05B35/00; E05B35/08; E05B35/083; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7729; Y10T70/7734; Y10T70/778; Y10T70/7791; Y10T70/7881; Y10T70/7893
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) | 1938-04-08 | 1938-10-08 | 1939-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-08 | 1942-10-08 | 1943-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-08 | 1946-10-08 | 1947-04-09 | $7700.00 | Window Closed / Lapsed |