US3243570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gas pressure control for electron beam apparatus
Assignee: General Electric Co
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Filing: 1963-04-30
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Granted: 1966-03-29
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Expires: 1983-04-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Boring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:30
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/304; B; B23; B23K; B23K15/00; B23K15/10; H01J37/02; H01J37/04; H01J37/06; H01J37/077; H01J37/21; H01J37/24; H01J37/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE COMBINATION OF AN ENCLOSURE CONTAINING AN IONIZABLE GASEOUS MEDIUM, A CATHODE POSITIONED WITHIN SAID ENCLOSURE AND COMPRISING A HOLLOW PERFORATED STRUCTURE, MEANS FOR MAINTAINING SAID CATHODE AT A POTENTIAL NEGATIVE RELATIVE TO SAID ENCLOSURE AND SUFFICIENTLY HIGH TO PRODUCE A PLASMA WITHIN THE CATHODE STRUCTURE, SAID CATHODE HAVING AN APERTURE THROUGH WHICH AN ELECTRON BEAM ISSUES FROM THE PLASMA, WITH MEANS FOR CONTROLLING THE PRESSURE OF THE GASEOUS MEDIUM WITHIN SAID ENCLOSURE, SAID MEANS BEING RESPONSIVE TO VARIATIONS IN SELECTED GAS PRESSURE RELATED CHARACTERISTICS OF THE ELECTRON BEAM.
Claim 2
Dependent Claim
89 words
THE COMBINATION OF AN ENCLOSURE CONTAINING AN IONIZABLE GASEOUS MEDIUM, A CATHODE POSITIONED WITHIN SAID ENCLOSURE AND COMPRISING A HOLLOW PERFORATED STRUCTURE, MEANS FOR MAINTAINING SAID CATHODE AT A POTENTIAL NEGATIVE RELATIVE TO SAID ENCLOSURE AND SUFFICIENTLY HIGH TO PRODUCE A PLASMA WITHIN THE CATHODE STRUCTURE, SAID CATHODE HAVING AN APERTURE THROUGH WHICH AN ELECTRON BEAM ISSUES FROM THE PLASMA, WITH MEANS FOR CONTROLLING THE PRESSURE OF THE GASEOUS MEDIUM WITHIN SAID ENCLOSURE, SAID MEANS BEING RESPONSIVE TO VARIATIONS IN SELECTED GAS PRESSURE RELATED CHARACTERISTICS OF THE ELECTRON BEAM.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |