US1937523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock
Assignee: MARGARET SLATER
•
Filing: 1932-04-29
•
Granted: 1933-12-05
•
Expires: 1952-04-29
Abstract
No abstract record available.
Inventors
- 👤 Machinist Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:06
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/0031; Y; Y10; Y10S; Y10S70/00; Y10S70/71; Y10T; Y10T70/00; Y10T70/70; Y10T70/7141; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7605
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) | 1936-12-04 | 1937-06-05 | 1937-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-04 | 1941-06-05 | 1941-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-04 | 1945-06-05 | 1945-12-05 | $7700.00 | Window Closed / Lapsed |