Patent US2659832A successfully refreshed from Google Patents.
US2659832A
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Speed control system for electromagnetic coupling
Assignee: Dynamatic Corp
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Filing: 1951-03-26
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Granted: 1953-11-17
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Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Jaeschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:19
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016; H02P29/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807190A
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US2031509A
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US2334179A
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US2285195A
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US2389367A
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US2430310A
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US2504878A
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US2524222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |