Patent US2711673A successfully refreshed from Google Patents.
US2711673A
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Method and means for producing spiral face gears by continuous action
Assignee: Fellows Gear Shaper Co
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Filing: 1948-08-21
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Granted: 1955-06-28
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Expires: 1968-08-21
Abstract
No abstract record available.
Inventors
- 👤 Edward W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:22
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/12; B23F21/16; B23F15/00; B23F15/06; B23F21/02; B23F21/026; B23F9/00; B23F9/02; B23F9/08; B23F9/082; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T29/477; Y10T407/00; Y10T407/17; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10159; Y10T409/101749
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |