Patent US3328201A successfully refreshed from Google Patents.
US3328201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for electron tubes
Assignee: RCA Corp
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Filing: 1964-04-27
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Granted: 1967-06-27
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Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Howard G Scheible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:55
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J1/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/2949
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A HEATER FOR A CATHODE OF AN ELECTRON TUBE COMPRISING A WIRE SRUCTURE HAVING A COATING THEREON, SAID COATING COMPRISING A FIRST COATING OF ALUMINUM OXIDE IN CONTACT WITH SAID WIRE STRUCTURE, AND A SECOND COATING OF A MATERIAL IN CONTACT WITH SAID FIRST COATING, SAID SECOND MIXTURE COMPRISING A MIXTURE OF ALUMMINUM OXIDE AND MOLYBDENUM DISILICIDE.
Claim 2
Dependent Claim
57 words
A HEATER FOR A CATHODE OF AN ELECTRON TUBE COMPRISING A WIRE SRUCTURE HAVING A COATING THEREON, SAID COATING COMPRISING A FIRST COATING OF ALUMINUM OXIDE IN CONTACT WITH SAID WIRE STRUCTURE, AND A SECOND COATING OF A MATERIAL IN CONTACT WITH SAID FIRST COATING, SAID SECOND MIXTURE COMPRISING A MIXTURE OF ALUMMINUM OXIDE AND MOLYBDENUM DISILICIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |