US2492747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled electrical apparatus
Assignee: RCA Corp
•
Filing: 1945-06-22
•
Granted: 1949-12-27
•
Expires: 1965-06-22
Abstract
No abstract record available.
Inventors
- 👤 Russell E Herr
- 👤 Lannes E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/08; H01G4/00; H01G4/28; H01G4/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1942153A
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US1991707A
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GB378656A
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US2050587A
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US2098746A
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US2256757A
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US2306527A
Cited
CH218588A
Cited
US2326151A
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US2359174A
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US2403969A
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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) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |