US2512205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic cylinder velocity control
Assignee: Baldwin Locomotive Works
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Filing: 1945-06-12
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Granted: 1950-06-20
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Expires: 1965-06-12
Abstract
No abstract record available.
Inventors
- 👤 Keith W Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:58
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/18; B30B15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US401795A
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US635848A
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US881165A
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US917642A
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US1877102A
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US1891312A
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US2270767A
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US2266415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |