Patent US2993134A successfully refreshed from Google Patents.
US2993134A
Expired / Lapsed
US
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Permanent magnet motor
Assignee: General Electric Co
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Filing: 1957-01-02
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Granted: 1961-07-18
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Expires: 1977-01-02
Abstract
No abstract record available.
Inventors
- 👤 Luke M Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:37
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/02; H02K23/04; H02K1/00; H02K1/06; H02K1/12; H02K1/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444299A
Cited
GB373561A
Cited
US2170892A
Cited
US2193406A
Cited
US2248272A
Cited
GB724192A
Cited
DE935200C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |