Patent US3633992A successfully refreshed from Google Patents.
US3262003A
Expired / Lapsed
US
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Perforated hollow cathode discharge device
Assignee: Lockheed Martin Corp
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Filing: 1962-05-25
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Granted: 1966-07-19
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 Iii Richard J Allen
- 👤 Hugo L L Van Paassen
- 👤 Jr Emil C Muly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
AN ELECTRONIC DISCHARGE DEVICE COMPRISING IN COMBINATION MEANS FOR GENERATING A NARROW ELECTRON BEAM IN AN IONIZABLE GAS HAVING A LOW SUBATMOSHPERIC PRESSURE, SAID GENERATING MEANS INCLUDING A HOLLOW CATHODE BODY DEFINING A GENERALLY SPHERICAL CAVITY AND HAVING A PERFORATED WALL PORTION CONTAINING AN APERTURE; AND MEANS FOR DISPERSING UPON PERFORATED PORTIONS OF THE BODY REMOTE FROM THE APERTURE THE IONS GENERATED BY AND IN CONJUNCTION WITH THE ELECTRON BEAM WHICH ARE ATTACHED TO THE CATHODE, WHEREBY THE NUMBER OF IONS ENTERING THE CATHODE CAVITY THROUGH THE APERTURE IS REDUCED.
Claim 2
Dependent Claim
90 words
AN ELECTRONIC DISCHARGE DEVICE COMPRISING IN COMBINATION MEANS FOR GENERATING A NARROW ELECTRON BEAM IN AN IONIZABLE GAS HAVING A LOW SUBATMOSHPERIC PRESSURE, SAID GENERATING MEANS INCLUDING A HOLLOW CATHODE BODY DEFINING A GENERALLY SPHERICAL CAVITY AND HAVING A PERFORATED WALL PORTION CONTAINING AN APERTURE; AND MEANS FOR DISPERSING UPON PERFORATED PORTIONS OF THE BODY REMOTE FROM THE APERTURE THE IONS GENERATED BY AND IN CONJUNCTION WITH THE ELECTRON BEAM WHICH ARE ATTACHED TO THE CATHODE, WHEREBY THE NUMBER OF IONS ENTERING THE CATHODE CAVITY THROUGH THE APERTURE IS REDUCED.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |