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Patent US1819853A successfully refreshed from Google Patents.
US1819853A
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Key operated combination lock
Assignee: MEHREN LOCK Co Inc
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Filing: 1928-05-10
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Granted: 1931-08-18
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Expires: 1948-05-10
Abstract
No abstract record available.
Inventors
- 👤 Mehren Oswald D Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:42
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/02; E05B27/08; E05B27/086; Y; Y10; Y10S; Y10S70/00; Y10S70/05; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7729; Y10T70/7734; Y10T70/774; Y10T70/7746
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) | 1934-08-17 | 1935-02-16 | 1935-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-17 | 1939-02-16 | 1939-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-17 | 1943-02-16 | 1943-08-18 | $7700.00 | Window Closed / Lapsed |