US1693781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for grinding gears
Assignee: Individual
•
Filing: 1923-11-16
•
Granted: 1928-12-04
•
Expires: 1943-11-16
Abstract
No abstract record available.
Inventors
- 👤 Executor Einar A Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
B; B23; B23F; B23F5/00; B23F5/02; B23F5/04; B23F23/00; B23F23/12; B23F23/1225; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/20
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) | 1931-12-04 | 1932-06-04 | 1932-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-12-04 | 1936-06-04 | 1936-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-12-04 | 1940-06-04 | 1940-12-04 | $7700.00 | Window Closed / Lapsed |