Patent US2470666A successfully refreshed from Google Patents.
US2470666A
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Assignee: Westinghouse Electric Corp
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Filing: 1944-08-25
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Granted: 1949-05-17
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Expires: 1964-08-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Suffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:37
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J2229/00; H01J2229/89; H01J2229/8909; H01J2229/8911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691324A
Cited
US2015570A
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GB395578A
Cited
US2051632A
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US2026725A
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GB426789A
Cited
GB426797A
Cited
GB445978A
Cited
US2312206A
Cited
US2402762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |