Patent US2720319A successfully refreshed from Google Patents.
US2720319A
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US
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Cushions for draft gears
Assignee: Cardwell Westinghouse Co
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Filing: 1951-04-30
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Granted: 1955-10-11
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Expires: 1971-04-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:43
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/40; F16F1/406; B; B61; B61G; B61G9/00; B61G9/04; B61G9/06
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |