US1252679A
Expired / Lapsed
US
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Method of generating gear-teeth.
Assignee: Fellows Gear Shaper Co
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Filing: 1915-03-06
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Granted: 1918-01-08
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Expires: 1935-03-06
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Fellows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
B; B23; B23F; B23F9/00; B23F9/08; B23F9/10; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/103816; Y10T409/103975; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963; Y10T74/19972; Y10T74/19986
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) | 1921-01-07 | 1921-07-09 | 1922-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-01-07 | 1925-07-09 | 1926-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-01-07 | 1929-07-09 | 1930-01-08 | $7700.00 | Window Closed / Lapsed |