US2525470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: Westinghouse Electric Corp
•
Filing: 1945-02-16
•
Granted: 1950-10-10
•
Expires: 1965-02-16
Abstract
No abstract record available.
Inventors
- 👤 Benjamin P Baker
- 👤 Leon R Ludwig
- 👤 James M Cumming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:20
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/06; H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/32; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US533283A
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US812279A
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US844923A
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US896402A
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US1077319A
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US1142852A
Cited
US1629815A
Cited
US1901679A
Cited
US2074292A
Cited
DE679233C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |