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US3437897A
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US
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Axial air gap electric motor system with permanent magnet disc rotor
Assignee: CHARLES M LENNY
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Filing: 1966-06-08
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Granted: 1969-04-08
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Expires: 1986-06-08
Abstract
No abstract record available.
Inventors
- 👤 Charles M Lenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2070447A
Cited
US2814746A
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US3238399A
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US3229179A
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US3165685A
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US3229137A
Cited
US3290572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |