US2631025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Successively operated speeder springs for speed governors
Assignee: Westinghouse Air Brake Co
•
Filing: 1948-09-30
•
Granted: 1953-03-10
•
Expires: 1968-09-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Bone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:29
CPC Classifications
G; G05; G05D; G05D13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1180720A
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US1996679A
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US2009995A
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US2312212A
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US2281222A
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US2393375A
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US2347834A
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US2380963A
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US2418373A
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US2426840A
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |