US1977765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for producing gears
Assignee: Gleason Works
•
Filing: 1931-08-11
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Granted: 1934-10-23
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Expires: 1951-08-11
Abstract
No abstract record available.
Inventors
- 👤 Magnus H Johanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
B; B23; B23F; B23F1/00; B23F1/06; B23F23/00; B23F23/12; B23F23/1237; B23F23/125; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/107791; Y10T409/10795; Y10T409/108109; Y10T409/108268
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) | 1937-10-22 | 1938-04-23 | 1938-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-22 | 1942-04-23 | 1942-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-22 | 1946-04-23 | 1946-10-23 | $7700.00 | Window Closed / Lapsed |