Patent US2798581A successfully refreshed from Google Patents.
US2798581A
Expired / Lapsed
US
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Solenoid operated coil clutch mechanism
Assignee: Dukane Corp
•
Filing: 1954-02-25
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Granted: 1957-07-09
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Expires: 1974-02-25
Abstract
No abstract record available.
Inventors
- 👤 Michael C Supitilov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:48
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/105; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/1914; Y10T74/19219; Y10T74/19372
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US839786A
Cited
US1886692A
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US1953370A
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US2356421A
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US2622450A
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US2596654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |