US3328622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge device having primary and secondary electrodes
Assignee: GTE Sylvania Inc
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Filing: 1964-07-14
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Granted: 1967-06-27
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Charles L Toomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:08
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/06; H01J61/067; H01J61/0672
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
AN ELECTRIC DISCHARGE DEVICE COMPRISING AN ENVELOPE CONTAINING AN IONIZABLE FILL MATERIAL AND SPACED ELECTRODE STRUCTURES FOR SUPPORTING AN ALTERNATING ELECTRON DISCHARGE AND AN ION COUNTERFLOW, EACH ELECTRODE STRUCTURE COMPRISING A PRIMARY ELECTRODE HAVING A SUBSTANTIAL COATING OF ELECTRON EMISSIVE MATERIAL AND A SECONDARY ELECTRODE OF SUBSTANTIALLY BARE REFRACTORY METAL, CIRCUIT MEANS FOR ELECTRICALLY ISOLATING SAID PRIMARY ELECTRODE FROM THE SECONDARY ELECTRODE, AND THE SECONDARY ELECTRODE BEING DISPOSED CLOSE TO THE PRIMARY ELECTRODE FOR ACTIVATION BY EMISSIVE MATERIAL EVAPORATED FROM THE PRIMARY ELECTRODE.
References Cited (Backward Citations)
US2814748A
Cited
US3257397A
Cited
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 |