Patent US2867759A successfully refreshed from Google Patents.
US2867759A
Expired / Lapsed
US
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Servomotor control system adapted for machine tool use
Assignee: Saint Gobain Abrasives Inc
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Filing: 1954-07-12
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Granted: 1959-01-06
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Expires: 1974-07-12
Abstract
No abstract record available.
Inventors
- 👤 D George E Comstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:42
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/0405; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2502
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175820A
Cited
US2147674A
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US2348862A
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US2230715A
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US2311142A
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US2406299A
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US2397202A
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US2534801A
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US2584897A
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US2543950A
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US2643355A
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US2696578A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |