Patent US2592411A successfully refreshed from Google Patents.
US2592411A
Expired / Lapsed
US
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Flexible leaf hinge
Assignee: American Motors Corp
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Filing: 1950-05-05
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Granted: 1952-04-08
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Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Alvah V Frohnapel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/02; F25D23/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867046A
Cited
US1990871A
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US2210652A
Cited
US2241101A
Cited
US2321753A
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US2526129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |