Patent FR1110544A successfully refreshed from Google Patents.
US2620449A
Expired / Lapsed
US
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Dynamoelectric machine
Assignee: General Electric Co
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Filing: 1951-01-18
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Granted: 1952-12-02
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Expires: 1971-01-18
Abstract
No abstract record available.
Inventors
- 👤 Laurel A March
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:38
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/14; H02K9/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1673019A
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US1883288A
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US2050180A
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US2157191A
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US2153386A
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US2451219A
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US2489109A
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US2522675A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |