Patent US2850128A successfully refreshed from Google Patents.
US2850128A
Expired / Lapsed
US
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Rotary impact clutch
Assignee: ROTOR TOOL Co
•
Filing: 1952-08-01
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Granted: 1958-09-02
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Expires: 1972-08-01
Abstract
No abstract record available.
Inventors
- 👤 Paul R Van Sittert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:00
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2256496A
Cited
US2373664A
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US2347125A
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US2439756A
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US2575523A
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US2539930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |