US2820641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear chuck
Assignee: Garrison Machine Works Inc
•
Filing: 1956-07-19
•
Granted: 1958-01-21
•
Expires: 1976-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph P Garrison
- 👤 James O Garrison
- 👤 David D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/025; Y; Y10; Y10T; Y10T279/00; Y10T279/18; Y10T279/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739371A
Cited
US2710194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |