Patent US2951320A successfully refreshed from Google Patents.
US2951320A
Expired / Lapsed
US
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Clamp for internal grinding machine
Assignee: Heald Machine Co
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Filing: 1957-08-14
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Granted: 1960-09-06
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Expires: 1977-08-14
Abstract
No abstract record available.
Inventors
- 👤 Clifford G Menard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:59
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/06; B24B41/061; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1821873A
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US2017186A
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US2635395A
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US2715304A
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US2846278A
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US2897582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |