US3231332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for electric discharge apparatus
Assignee: The General Electric Company PLC
•
Filing: 1962-07-31
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Granted: 1966-01-25
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Jones David John
- 👤 Wallis David Richard
- 👤 Rowell William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:35
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0205; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12146; Y10T428/12229; Y10T428/12271; Y10T428/12285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AN ELECTRON EMISSIVE ELECTRODE FOR USE IN AN ELECTRIC DISCHARGE DEVICE, WHEREIN THE ELCTRON EMISSIVE PART IS FORMED OF A ONE-PIECE, COMPOSITE SINTERED-POWDER-MASS AND WORKED BODY COMPOSED MAINLY OF TUNGSTEN AND CONSISTING OF A CORE OF TUNGSTEN CONTAINING A DISPERSION OF ELECTRON EMISSIVE MATERIAL AND, INTEGRAL WITH THE CORE AND COVERING AT LEAST THE WHOLE OF THE MAJOR SURFACE OF THE CORE, WHICH SURFACE IS SUBJECTED TO DIRECT MECHANICAL AC-
Claim 2
Dependent Claim
70 words
AN ELECTRON EMISSIVE ELECTRODE FOR USE IN AN ELECTRIC DISCHARGE DEVICE, WHEREIN THE ELCTRON EMISSIVE PART IS FORMED OF A ONE-PIECE, COMPOSITE SINTERED-POWDER-MASS AND WORKED BODY COMPOSED MAINLY OF TUNGSTEN AND CONSISTING OF A CORE OF TUNGSTEN CONTAINING A DISPERSION OF ELECTRON EMISSIVE MATERIAL AND, INTEGRAL WITH THE CORE AND COVERING AT LEAST THE WHOLE OF THE MAJOR SURFACE OF THE CORE, WHICH SURFACE IS SUBJECTED TO DIRECT MECHANICAL AC-
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |