US2952952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive element
Assignee: Micromatic Hone Corp
•
Filing: 1959-02-16
•
Granted: 1960-09-20
•
Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Russell C Stanhope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:43
CPC Classifications
B; B24; B24B; B24B33/00; B24B33/08; B24B33/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675654A
Cited
US1886584A
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US2000611A
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US2265377A
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US2467094A
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US2644978A
Cited
US2740501A
Cited
US2749682A
Cited
US2790277A
Cited
US2823498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |