Patent US2823930A successfully refreshed from Google Patents.
US2823930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable trailer hitch
Assignee: Individual
•
Filing: 1954-09-20
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Granted: 1958-02-18
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Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Charles L Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:41
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/48; B60D1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2174468A
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US2399810A
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US2531859A
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US2544185A
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US2576383A
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US2547299A
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US2717164A
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US2604331A
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US2671674A
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US2745681A
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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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |