Patent US2468141A successfully refreshed from Google Patents.
US2468141A
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Electron discharge device
Assignee: Raytheon Co
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Filing: 1944-10-12
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Granted: 1949-04-26
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Expires: 1964-10-12
Abstract
No abstract record available.
Inventors
- 👤 William A True
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:45
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/22; H01J25/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1666450A
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US2079163A
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US2079809A
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US2094602A
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GB537518A
Cited
US2288380A
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US2303166A
Cited
US2335818A
Cited
US2412751A
Cited
US2380496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |