Patent US2279591A successfully refreshed from Google Patents.
US2279591A
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Night latch
Assignee: Yale and Towne Manufacturing Co
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Filing: 1939-08-10
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Granted: 1942-04-14
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Expires: 1959-08-10
Abstract
No abstract record available.
Inventors
- 👤 Frederic K Heyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:05
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/18; E05B63/20; Y; Y10; Y10S; Y10S70/00; Y10S70/06; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T292/54; Y10T292/558; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/5504; Y10T70/5531; Y10T70/5535
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) | 1945-04-13 | 1945-10-13 | 1946-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-13 | 1949-10-13 | 1950-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-13 | 1953-10-13 | 1954-04-14 | $7700.00 | Window Closed / Lapsed |