US2951513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-check valve
Assignee: Westinghouse Electric Corp
•
Filing: 1958-10-03
•
Granted: 1960-09-06
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 William E Wilson
- 👤 Louis L Nicolaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:08
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US603650A
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US802947A
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US1233220A
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US2089279A
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US2113798A
Cited
US2254905A
Cited
US2247513A
Cited
US2533712A
Cited
US2672266A
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US2792854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |