Patent US2851870A successfully refreshed from Google Patents.
US2851870A
Expired / Lapsed
US
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Locking mechanism for doors
Assignee: Individual
•
Filing: 1955-11-07
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Granted: 1958-09-16
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Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Oliver C Eckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:24
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/18; E05C19/182; Y; Y10; Y10T; Y10T292/00; Y10T292/03; Y10T292/34; Y10T70/00; Y10T70/40; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US413128A
Cited
US1319603A
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DE617965C
Cited
FR620478A
Cited
US2236938A
Cited
US2338851A
Cited
US2486790A
Cited
US2515935A
Cited
US2536941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |