US2879077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cushion suspension for single axles
Assignee: Youngstown Steel Car Corp
•
Filing: 1956-02-02
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Granted: 1959-03-24
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Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 William M Chalmers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:35
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/26; B60G11/27; B60G7/00; B60G7/04; B60G9/00; B60G9/04; B60G2200/00; B60G2200/30; B60G2200/31; B60G2204/00; B60G2204/40; B60G2204/45; B60G2204/4502; Y; Y10; Y10S; Y10S280/00; Y10S280/01
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |