US3028019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underframe structure and cushion mechanism for railway vehicles
Assignee: Buckeye Steel Castings Co
•
Filing: 1960-02-03
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Granted: 1962-04-03
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Expires: 1980-02-03
Abstract
No abstract record available.
Inventors
- 👤 James C Settles
- 👤 David D Macklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:56
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/10; F16F9/14; F16F9/16; F16F9/18; B; B61; B61G; B61G9/00; B61G9/12; B61G9/125
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |