US2516089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermionic valve apparatus
Assignee: Ohio Crankshaft Co
•
Filing: 1945-07-24
•
Granted: 1950-07-18
•
Expires: 1965-07-24
Abstract
No abstract record available.
Inventors
- 👤 King Stanley George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1497948A
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US1994076A
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US1979352A
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US2001567A
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US2015556A
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US2067143A
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US2066943A
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US2079206A
Cited
US2149080A
Cited
US2230558A
Cited
US2228078A
Cited
US2236195A
Cited
US2372104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |