Patent US2267181A successfully refreshed from Google Patents.
US2267181A
Expired / Lapsed
US
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Gear cutter
Assignee: Gleason Works
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Filing: 1937-12-22
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Granted: 1941-12-23
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Expires: 1957-12-22
Abstract
No abstract record available.
Inventors
- 👤 Wildhaber Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:43
CPC Classifications
D; D06; D06B; D06B23/00; B; B23; B23F; B23F21/00; B23F21/24; B23F21/241; B23F21/243; D06L; D06L4/00; D06L4/10; D06B2700/00; D06B2700/37; Y; Y10; Y10T; Y10T407/00; Y10T407/15; Y10T407/17; Y10T407/1745; Y10T407/19; Y10T407/1902
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) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |