US2963989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer support arrangement
Assignee: American Steel Foundries
•
Filing: 1955-05-05
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Granted: 1960-12-13
•
Expires: 1975-05-05
Abstract
No abstract record available.
Inventors
- 👤 Eugene G Opsahl
- 👤 Lester E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:25
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/07; B60P3/073; B61; B61D; B61D3/00; B61D3/16; B61D3/18; B61D3/182; B61D3/184; B61D45/00; B61D45/001
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |