Patent US2859845A successfully refreshed from Google Patents.
US2859845A
Expired / Lapsed
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Electromagnetic clutch
Assignee: STERLING PREC INSTR CORP
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Filing: 1955-03-03
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Granted: 1958-11-11
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Expires: 1975-03-03
Abstract
No abstract record available.
Inventors
- 👤 Bachman Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
F; F16; F16D; F16D67/00; F16D67/02; F16D67/06; F16D27/00; F16D27/02; F16D27/04; F16D27/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1697595A
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US1359321A
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US2401003A
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US2464129A
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US2514385A
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US2490044A
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US2757768A
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US2801720A
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US2796962A
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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) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |