US2972912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear cutting machine with work spindle positioning means
Assignee: Gleason Works
•
Filing: 1957-11-22
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Granted: 1961-02-28
•
Expires: 1977-11-22
Abstract
No abstract record available.
Inventors
- 👤 Leonard O Carlsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/54; B23Q5/56; B23F; B23F23/00; B23F23/08; B23F23/10; B23F9/00; B23F9/08; B23F9/10; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1453; Y10T74/1459; Y10T74/19; Y10T74/19623; Y10T74/20; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB497331A
Cited
US2188996A
Cited
US2355457A
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US2392228A
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US2635326A
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US2777336A
Cited
US2794103A
Cited
US2831374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |