Patent US2839307A successfully refreshed from Google Patents.
US2839307A
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Centrifugal chuck
Assignee: Garrison Machine Works Inc
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Filing: 1953-11-03
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Granted: 1958-06-17
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Expires: 1973-11-03
Abstract
No abstract record available.
Inventors
- 👤 Ralph P Garrison
- 👤 James O Garrison
- 👤 David D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:51
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/18; B23B31/14; B23B31/142; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17231; Y10T279/24; Y10T279/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1263081A
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US1470158A
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US1864191A
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US2207621A
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US2443895A
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US2450970A
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US2535199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |