Patent DE704057C successfully refreshed from Google Patents.
Patent US2421592A successfully refreshed from Google Patents.
US2421592A
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Dynamoelectric machine
Assignee: General Electric Co
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Filing: 1944-11-16
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Granted: 1947-06-03
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Expires: 1964-11-16
Abstract
No abstract record available.
Inventors
- 👤 Sven R Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:38
CPC Classifications
H; H02; H02K; H02K5/00; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306018A
Cited
US631445A
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US1229693A
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US1401548A
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US1350077A
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FR25641E
Cited
US1880124A
Cited
US2037083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |