US3146847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsion bar counterbalance for tilting car vehicles
Assignee: Mack Trucks Inc
•
Filing: 1962-02-02
•
Granted: 1964-09-01
•
Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Rutman
- 👤 Donald M Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:46
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/06; B62D33/063; B62D33/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2173893A
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US2091059A
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US2253671A
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US2781102A
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US2761370A
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US2864121A
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US2951548A
Cited
US2957696A
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US2876857A
Cited
US3039557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |