US2487520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power transmission with bypass flow control valve
Assignee: Vickers Inc
•
Filing: 1944-12-26
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Granted: 1949-11-08
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Expires: 1964-12-26
Abstract
No abstract record available.
Inventors
- 👤 Brown Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4043; F16H61/46; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7791; Y10T137/7835
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1314746A
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US2272684A
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US2111964A
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US2082473A
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US2064864A
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US2059152A
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US2343375A
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US2181049A
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US2255783A
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US2288830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |