US2774807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporization-forced liquid cooled transformer
Assignee: General Electric Co
•
Filing: 1953-02-19
•
Granted: 1956-12-18
•
Expires: 1973-02-19
Abstract
No abstract record available.
Inventors
- 👤 Lawrence C Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:38
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US513421A
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US1953216A
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US2341058A
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US2347989A
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US2447883A
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US2416130A
Cited
US2440930A
Cited
US2615075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |