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US2500963A
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Apparatus for quenching the teeth of gears
Assignee: Ohio Crankshaft Co
•
Filing: 1945-01-11
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Granted: 1950-03-21
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Expires: 1965-01-11
Abstract
No abstract record available.
Inventors
- 👤 Howard E Somes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:27
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371117A
Cited
US2068913A
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US2166731A
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US2282322A
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US2205473A
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US2364623A
Cited
US2376515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |