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US2770082A
Expired / Lapsed
US
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Grinding and polishing and the like
Assignee: Individual
•
Filing: 1953-08-31
•
Granted: 1956-11-13
•
Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 Whitesell Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:22
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/04; B24B21/12; B24B21/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US401215A
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US604933A
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CA476973A
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US696416A
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US968431A
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US1470740A
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US1608975A
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US2162279A
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US2287768A
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US2477602A
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US2624158A
Cited
US2581270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |