Patent US2431144A successfully refreshed from Google Patents.
US2431144A
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External anode with cooling fins
Assignee: Westinghouse Electric Corp
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Filing: 1942-12-11
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Granted: 1947-11-18
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Expires: 1962-12-11
Abstract
No abstract record available.
Inventors
- 👤 Carl H Scullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:57
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/34; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1668508A
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US1903945A
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US1840724A
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US2046808A
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US2090638A
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US2310936A
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US2345794A
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US2289984A
Cited
US2330032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |