US2773206A
Expired / Lapsed
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Magnetic positive drive couplings
Assignee: Tormag Transmissions Ltd
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Filing: 1954-05-18
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Granted: 1956-12-04
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Expires: 1974-05-18
Abstract
No abstract record available.
Inventors
- 👤 Igor V Zoznlin
- 👤 George J Okulitch
- 👤 George M Volkoff
- 👤 Vladimir J Okulitch
- 👤 Alec S J Ellett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:41
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/11; F; F16; F16D; F16D43/00; F16D43/02; F16D43/04; F16D43/14; F16D43/18; F16D47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |