US2667818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine and method for producing gears
Assignee: Gleason Works
•
Filing: 1947-10-15
•
Granted: 1954-02-02
•
Expires: 1967-10-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Stewart
- 👤 Leonard O Carlsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:00
CPC Classifications
B; B23; B23F; B23F1/00; B23F1/06; B23F23/00; B23F23/12; B23F23/1237; B23F23/125; B23F9/00; B23F9/08; B23F9/10; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/103816; Y10T409/103975; Y10T409/104134; Y10T409/104452; Y10T409/104611
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE368843C
Cited
US1956817A
Cited
US2253683A
Cited
US2302004A
Cited
US2342232A
Cited
US2372241A
Cited
US2444551A
Cited
US2499842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |