Patent US2836451A successfully refreshed from Google Patents.
US2836451A
Expired / Lapsed
US
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Door latch mechanism
Assignee: AMERICAN ART METALS Co
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Filing: 1956-03-13
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Granted: 1958-05-27
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Expires: 1976-03-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Leonard Clifton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1046; E05B65/106; E05B65/1066; E05B63/00; E05B63/18; E05B63/20; E05B65/1006; E05B65/1093; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0822; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5159
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |