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Patent US2848241A successfully refreshed from Google Patents.
US2848241A
Expired / Lapsed
US
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Collapsible trailer convertible from wheeled vehicle to runner supported vehicle
Assignee: American Air Filter Co Inc
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Filing: 1954-03-29
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Granted: 1958-08-19
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Hubbard Arthur Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:45
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/20; F24B1/202; F24B1/207; B; B62; B62B; B62B13/00; B62B13/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US123707A
Cited
CA462621A
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CH185014A
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US2219585A
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US2475145A
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DE813095C
Cited
US2571390A
Cited
US2704989A
Cited
US2715030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |