US2933350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrol-pneumatic and dynamic brake apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1956-06-28
•
Granted: 1960-04-19
•
Expires: 1976-06-28
Abstract
No abstract record available.
Inventors
- 👤 Claude M Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:18
CPC Classifications
B; B61; B61H; B61H9/00; B61H9/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1440499A
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US2038174A
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US2130621A
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US2243068A
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US2177529A
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US2165999A
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US2234897A
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US2656222A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |