Patent US2641731A successfully refreshed from Google Patents.
US2641731A
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Wave propagating electron discharge device
Assignee: Teledyne UK Ltd
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Filing: 1948-09-27
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Granted: 1953-06-09
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Expires: 1968-09-27
Abstract
No abstract record available.
Inventors
- 👤 Lines Albert Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:54
CPC Classifications
H; H05; H05H; H05H9/00; H05H9/02; C; C04; C04B; C04B28/00; C04B28/02; C04B7/00; C04B7/36; C04B7/48; C04B7/52; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/36; H01J25/00; H01J25/34; H01J25/36; H01J25/38; H01J25/42; H01J25/44; H01P; H01P1/00; H01P1/20; H01P1/207; H01P1/211; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US511407A
Cited
US2300052A
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US2367295A
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US2428612A
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US2477122A
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US2547503A
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US2493661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |