US2676549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power and brake application system for railway cars
Assignee: Individual
•
Filing: 1951-05-08
•
Granted: 1954-04-27
•
Expires: 1971-05-08
Abstract
No abstract record available.
Inventors
- 👤 Richardson William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:06
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US141272A
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US200313A
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US742722A
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US1537642A
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US1555350A
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US1940550A
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US2246923A
Cited
US2442125A
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US2445585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |