Patent US2770964A successfully refreshed from Google Patents.
US2770964A
Expired / Lapsed
US
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Adapter housing for door locks
Assignee: Emhart Industries Inc
•
Filing: 1953-10-19
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Granted: 1956-11-20
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Expires: 1973-10-19
Abstract
No abstract record available.
Inventors
- 👤 Lyford C Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:14
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; E05B63/00; E05B63/0056; E05B63/006; Y; Y10; Y10T; Y10T292/00; Y10T292/62; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8459; Y10T70/8541
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1025938A
Cited
US1720640A
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US2200387A
Cited
US2263772A
Cited
US2568273A
Cited
US2700887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |