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Patent US3508091A successfully refreshed from Google Patents.
US3508091A
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Double claw tooth stator synchronous and stepping motor with indicator
Assignee: Philips North America LLC
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Filing: 1967-12-26
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Granted: 1970-04-21
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Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard J Kavanaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:45
CPC Classifications
H; H02; H02K; H02K37/00; H02K37/10; H02K37/12; H02K37/14; H02K21/00; H02K21/12; H02K21/14; H02K21/145; H02K21/22; H02K21/227; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2070447A
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US2292265A
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DE904071C
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US2548633A
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US2539144A
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US2981855A
Cited
US3238399A
Cited
US3205383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |