Patent US2883849A successfully refreshed from Google Patents.
US2883849A
Expired / Lapsed
US
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Lock safety device for door locks
Assignee: Individual
•
Filing: 1956-02-23
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Granted: 1959-04-28
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Lorenzo Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:59
CPC Classifications
E; E05; E05B; E05B17/00; E05B17/14; E05B17/142; Y; Y10; Y10S; Y10S70/00; Y10S70/56; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/7955; Y10T70/7977
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |