Patent US3138725A successfully refreshed from Google Patents.
US3138725A
Expired / Lapsed
US
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Close-spaced thermionic converter
Assignee: General Electric Co
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Filing: 1958-09-17
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Granted: 1964-06-23
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Expires: 1978-09-17
Abstract
No abstract record available.
Inventors
- 👤 John M Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:35
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/30; F22B1/281; G; G21; G21D; G21D7/00; G21D7/04; H; H01; H01J; H01J19/00; H01J19/68; H01J45/00; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN APPARATUS COMPRISING A RELATIVELY RIGID CATHODE MEMBER, A THIN, FLEXIBLE, ANODE MEMBER AND A REFRACTORY INSULATING POWDER HAVING PARTICLES UNIFORMLY INTERSPERSED BETWEEN SAID MEMBERS, MEANS PROVIDING A UNIFORM PRESSURE AGAINST SAID ANODE MEMBER ON THE SIDE THEREOF REMOTE FROM SAID PARTICLES TO MAINTAIN THE ANODE MEMBER IN FIRM ENGAGEMENT WITH SAID POWDER PARTICLES AND SAID POWDER PARTICLES IN FIRM ENGAGEMENT WITH SAID CATHODE MEMBER AND THEREBY DETERMINE THE LENGTH OF THE DISCHARGE PATH BETWEEN SAID ANODE MEMBER AND SAID CATHODE MEMBER.
Claim 2
Independent Claim
82 words
AN APPARATUS COMPRISING A RELATIVELY RIGID CATHODE MEMBER, A THIN, FLEXIBLE, ANODE MEMBER AND A REFRACTORY INSULATING POWDER HAVING PARTICLES UNIFORMLY INTERSPERSED BETWEEN SAID MEMBERS, MEANS PROVIDING A UNIFORM PRESSURE AGAINST SAID ANODE MEMBER ON THE SIDE THEREOF REMOTE FROM SAID PARTICLES TO MAINTAIN THE ANODE MEMBER IN FIRM ENGAGEMENT WITH SAID POWDER PARTICLES AND SAID POWDER PARTICLES IN FIRM ENGAGEMENT WITH SAID CATHODE MEMBER AND THEREBY DETERMINE THE LENGTH OF THE DISCHARGE PATH BETWEEN SAID ANODE MEMBER AND SAID CATHODE MEMBER.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |