US1904882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burglarproof lock
Assignee: AUGUST F W VIEHWEGER
•
Filing: 1929-04-20
•
Granted: 1933-04-18
•
Expires: 1949-04-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Prior
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:32
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/12; E05B63/122; Y; Y10; Y10T; Y10T70/00; Y10T70/20; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/7955; Y10T70/7977
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) | 1936-04-17 | 1936-10-17 | 1937-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-17 | 1940-10-17 | 1941-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-17 | 1944-10-17 | 1945-04-18 | $7700.00 | Window Closed / Lapsed |