Patent US4746219A successfully refreshed from Google Patents.
US3434876A
Expired / Lapsed
US
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Photosensitive cathodes
Assignee: RCA Corp
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Filing: 1965-11-23
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Granted: 1969-03-25
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Expires: 1985-11-23
Abstract
No abstract record available.
Inventors
- 👤 Richard G Stoudenheimer
- 👤 Daniel L Thoman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:03
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/34; H01J2201/00; H01J2201/34; H01J2201/342; H01J2201/3421; H01J2201/3426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2244720A
Cited
US2574356A
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US2880344A
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US2770561A
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US2914690A
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US3179835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |