US2471636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer connection
Assignee: Individual
•
Filing: 1945-07-30
•
Granted: 1949-05-31
•
Expires: 1965-07-30
Abstract
No abstract record available.
Inventors
- 👤 William E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1967326A
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US1920878A
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US2091009A
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US2133065A
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US2092309A
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US2266913A
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US2375970A
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US2383666A
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US2392903A
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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) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |