Patent US2804110A successfully refreshed from Google Patents.
US2804110A
Expired / Lapsed
US
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Keyhole saw with double parallel cutting edges
Assignee: Individual
•
Filing: 1954-01-05
•
Granted: 1957-08-27
•
Expires: 1974-01-05
Abstract
No abstract record available.
Inventors
- 👤 George R Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:38
CPC Classifications
B; B23; B23D; B23D61/00; B23D61/12; B23D61/123; B23D49/00; B23D49/003; B23D49/10; B23D49/14; B23D51/00; B23D51/08; B23D51/10; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7084; Y10T83/00; Y10T83/687; Y10T83/6895
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1414608A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |