Patent US2280045A successfully refreshed from Google Patents.
US2280045A
Expired / Lapsed
US
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Gear finishing machine
Assignee: Fellows Gear Shaper Co
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Filing: 1936-06-19
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Granted: 1942-04-14
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Expires: 1956-06-19
Abstract
No abstract record available.
Inventors
- 👤 Edward W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:08
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/06; B23F19/063; B23F21/00; B23F21/28; B23F21/286; B23F23/00; B23F23/12; B23F23/1237; B23F23/1281; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10477; Y10T409/105088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-04-13 | 1945-10-13 | 1946-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-13 | 1949-10-13 | 1950-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-13 | 1953-10-13 | 1954-04-14 | $7700.00 | Window Closed / Lapsed |