US2947798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling arrangement for electric apparatus
Assignee: General Electric Co
•
Filing: 1957-08-20
•
Granted: 1960-08-02
•
Expires: 1977-08-20
Abstract
No abstract record available.
Inventors
- 👤 Camilli Guglielmo
- 👤 David R Pryde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:55
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE89935C
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US96157A
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US1484258A
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US1703965A
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GB374828A
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US2032287A
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US2701455A
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US2845472A
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US2791101A
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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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |