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Patent US2781731A successfully refreshed from Google Patents.
US2781731A
Expired / Lapsed
US
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Suspension for light weight vehicles
Assignee: ACF Industries Inc
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Filing: 1951-10-19
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Granted: 1957-02-19
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Expires: 1971-10-19
Abstract
No abstract record available.
Inventors
- 👤 John R Furrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:32
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/22; B61F5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |