Patent DE920641C successfully refreshed from Google Patents.
Patent US2947547A successfully refreshed from Google Patents.
US2947547A
Expired / Lapsed
US
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Tractor-trailer assembly including a pneumatic suspension for the trailer
Assignee: GRASCO Inc
•
Filing: 1955-06-08
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Granted: 1960-08-02
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Expires: 1975-06-08
Abstract
No abstract record available.
Inventors
- 👤 Gouirand Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:42
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; B62D53/062; B60; B60G; B60G2204/00; B60G2204/40; B60G2204/423; B60G2204/4232; B60G2204/44; B60G2204/45; B60G2204/4504; B60G2204/47; B60G2204/4702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733931A
Cited
US2094882A
Cited
US2415706A
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US2325869A
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US2318257A
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US2350841A
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US2361166A
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US2480909A
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US2475443A
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US2663569A
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US2683611A
Cited
US2707062A
Cited
US2771303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |