Patent US2633678A successfully refreshed from Google Patents.
US2633678A
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US
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Machine tool and method of operating
Assignee: Thompson Grinder Co
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Filing: 1951-05-17
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Granted: 1953-04-07
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Expires: 1971-05-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:06
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; B24B47/06; B23; B23Q; B23Q15/00; B23Q15/007; B23Q15/0075; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1717326A
Cited
US1996465A
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US1872552A
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US1977341A
Cited
US2161216A
Cited
GB509552A
Cited
US2129049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |