Patent US2454337A successfully refreshed from Google Patents.
US2454337A
Expired / Lapsed
US
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Electronic device
Assignee: Westinghouse Electric Corp
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Filing: 1945-08-28
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Granted: 1948-11-23
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Expires: 1965-08-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Okress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:34
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H01J23/00; H01J23/36; H01J23/40; H01J23/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2404212A
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US2414085A
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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) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |