Patent US2589475A successfully refreshed from Google Patents.
US2589475A
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Machine for producing gears
Assignee: Gleason Works
•
Filing: 1948-04-21
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Granted: 1952-03-18
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Expires: 1968-04-21
Abstract
No abstract record available.
Inventors
- 👤 Leonard O Carlsen
- 👤 Norman W Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:26
CPC Classifications
B; B23; B23F; B23F23/00; B23F23/02; B23F23/04; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/100795; Y10T409/100954
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US394170A
Cited
US1052092A
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US1794424A
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US1876372A
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US1936401A
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US1945662A
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US2154038A
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US2343407A
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US2322294A
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US2360906A
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US2382013A
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US2352632A
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US2536413A
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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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |