US3539845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor whose magnetic circuit comprises a thin layer of hard magnetic material
Assignee: RECH EN MATIERE DE MICRO MOTEU
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Filing: 1969-05-06
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Granted: 1970-11-10
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Expires: 1989-05-06
Abstract
No abstract record available.
Inventors
- 👤 Georges Stcherbatcheff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:19
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/125; G; G04; G04C; G04C3/00; G04C3/16; G04D; G04D3/00; G04D3/0074; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145; H02K1/00; H02K1/06; H02K1/12; H02K37/00; H02K37/10; H02K37/12; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1884115A
Cited
US2183404A
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US2547599A
Cited
US3068373A
Cited
US3068374A
Cited
US3261996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |