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US2985778A
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US
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Synchronous motor
Assignee: Motors Liquidation Co
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Filing: 1958-03-21
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Granted: 1961-05-23
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Expires: 1978-03-21
Abstract
No abstract record available.
Inventors
- 👤 William E Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:15
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/118; H02K7/1185; H02K1/00; H02K1/06; H02K1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AU571032A
Cited
US1996946A
Cited
US2059518A
Cited
GB515924A
Cited
US2326885A
Cited
FR981246A
Cited
FR59254E
Cited
GB588000A
Cited
US2722297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |