Patent US2704948A successfully refreshed from Google Patents.
US2704948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power chain saw sharpenper
Assignee: Individual
•
Filing: 1953-05-05
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Granted: 1955-03-29
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Expires: 1973-05-05
Abstract
No abstract record available.
Inventors
- 👤 Grand Charles O Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:35
CPC Classifications
B; B23; B23D; B23D63/00; B23D63/08; B23D63/16; B23D63/162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US437929A
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US1488056A
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US1850331A
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US2318456A
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US2410828A
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US2453638A
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US2589165A
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US2568062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |