US2647780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch mechanism
Assignee: Lyon Metal Products LLC
•
Filing: 1944-12-15
•
Granted: 1953-08-04
•
Expires: 1964-12-15
Abstract
No abstract record available.
Inventors
- 👤 Harvey G Knuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:53
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/12; E05C3/16; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/1055; Y10T292/1056; Y10T292/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US349671A
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US767567A
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US1059952A
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US1563489A
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US1789083A
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US1954500A
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US1929775A
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US1925308A
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US2010492A
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US2188139A
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US2265691A
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US2342831A
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US2304145A
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US2309507A
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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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |