Patent US2446934A successfully refreshed from Google Patents.
US2446934A
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Ratchet type latch
Assignee: Chicago Forging and Manufacturing Co
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Filing: 1946-02-07
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Granted: 1948-08-10
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Expires: 1966-02-07
Abstract
No abstract record available.
Inventors
- 👤 Walter H Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:20
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/16; E05B15/00; E05B15/0046; E05B83/24; Y; Y10; Y10S; Y10S292/00; Y10S292/14; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1047; Y10T292/1075; Y10T292/1083; Y10T292/1092; Y10T292/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190625596A
Cited
US1060019A
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US2181493A
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US2146379A
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US2301221A
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US2246787A
Cited
US2274711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |