Patent US2424271A successfully refreshed from Google Patents.
US2424271A
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Gear grinding machine
Assignee: Gleason Works
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Filing: 1945-04-24
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Granted: 1947-07-22
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Expires: 1965-04-24
Abstract
No abstract record available.
Inventors
- 👤 Clarence T Galloway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:28
CPC Classifications
B; B23; B23F; B23F9/00; B23F9/02; B23F9/025; B23F23/00; B23F23/12; B23F23/1225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |