Patent US3470791A successfully refreshed from Google Patents.
US2717152A
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US
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Reversed spring suspension for vehicle bodies
Assignee: ART L KETCHUM
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Filing: 1953-01-21
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Granted: 1955-09-06
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Roscoe B Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:52
CPC Classifications
B; B60; B60G; B60G3/00; B60G3/18; B60G3/20; B60G11/00; B60G11/14; B60G21/00; B60G21/02; B60G21/04; B60G21/05; B60G2204/00; B60G2204/10; B60G2204/12; B60G2204/124; B60G2204/40; B60G2204/421; B60G2204/422
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) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |