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US2658593A
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Electromagnetically actuated mechanical double-friction coupling
Assignee: Individual
•
Filing: 1949-09-21
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Granted: 1953-11-10
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Expires: 1969-09-21
Abstract
No abstract record available.
Inventors
- 👤 Doebeli Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/02; F16D27/04; F16D27/08; F16D27/12; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/304; F16H2063/3046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB599462A
Cited
US2500814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |