US2963987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snubbed suspension means for a railway car wheel and axle assembly
Assignee: American Steel Foundries
•
Filing: 1958-02-07
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Granted: 1960-12-13
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Expires: 1978-02-07
Abstract
No abstract record available.
Inventors
- 👤 Robert B Cottrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/26; B61F5/30; B61F5/305; B61F5/32; B61F5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2355450A
Cited
US2460211A
Cited
US2539607A
Cited
US2572113A
Cited
US2625888A
Cited
US2880680A
Cited
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 |