Patent US3474313A successfully refreshed from Google Patents.
US3474313A
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US
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Alternating-current torque motors
Assignee: Messier SA
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Filing: 1967-12-01
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Granted: 1969-10-21
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Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Rene Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:14
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; F; F15; F15B; F15B9/00; F15B9/16; F15B9/17; H01F29/00; H01F29/14; H01F29/143; H02; H02K; H02K26/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2859391A
Cited
US2891181A
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US2905871A
Cited
US3001115A
Cited
US2939055A
Cited
US3169215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |