US2940789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door latch
Assignee: Humber Ltd
•
Filing: 1955-12-05
•
Granted: 1960-06-14
•
Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Priestman Francis Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:25
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; Y; Y10; Y10S; Y10S292/00; Y10S292/26; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0932; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/1053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR962447A
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US1514528A
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US2143965A
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US2246782A
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US2311688A
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US2376992A
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US2435180A
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US2435987A
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US2569040A
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US2569041A
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US2569042A
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US2641495A
Cited
US2673757A
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US2758862A
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US2801869A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |