US2626485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction-driven sharpening device
Assignee: Individual
•
Filing: 1951-01-25
•
Granted: 1953-01-27
•
Expires: 1971-01-25
Abstract
No abstract record available.
Inventors
- 👤 Waldbauer Rueben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:52
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/46; B24B3/466
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US540847A
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US736829A
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US1343342A
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US1385175A
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US1481621A
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US1642583A
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US2126632A
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US2185519A
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US2244586A
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US2510601A
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US2541829A
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US2540443A
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US2573501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |