US2772905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door latch mechanism
Assignee: DUSING AND HUNT Inc
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Filing: 1954-07-14
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Granted: 1956-12-04
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Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Leon F Dusing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:22
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/104; E05C; E05C9/00; E05C9/008; E05C9/02; E05C9/18; E05C9/1825; E05C9/1833; E05C9/1841; Y; Y10; Y10S; Y10S292/00; Y10S292/66; Y10S70/00; Y10S70/10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0839; Y10T292/096; Y10T292/1014; Y10T292/1021
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |