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Patent US2528541A successfully refreshed from Google Patents.
US2528541A
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US
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Electron discharge device
Assignee: STC PLC
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Filing: 1945-11-01
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Granted: 1950-11-07
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Expires: 1965-11-01
Abstract
No abstract record available.
Inventors
- 👤 Wolf S Pajes
- 👤 Richard E Downing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084867A
Cited
US2193602A
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US2289220A
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US2412824A
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US2437279A
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US2404212A
Cited
US2422088A
Cited
US2454337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |