US2828437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low inductance cathode and tube structure
Assignee: Westinghouse Electric Corp
•
Filing: 1952-07-10
•
Granted: 1958-03-25
•
Expires: 1972-07-10
Abstract
No abstract record available.
Inventors
- 👤 Ruth M Dailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:53
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1963051A
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US2400753A
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US2468152A
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US2647220A
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US2481026A
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US2482769A
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US2460141A
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US2684453A
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US2651000A
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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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |