US3255376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-noise electron guns
Assignee: RCA Corp
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Filing: 1962-01-02
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Granted: 1966-06-07
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Arie L Eichenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:02
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/06; H01J23/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LOW-NOISE ELECTRON GUN FOR A BEAM TUBE, SAID GUN COMPRISING: (A) MEANS FOR FORMING A NOISE-REDUCING LOW-VELOCITY DRIFT REGION; (B) MEANS, INCLUDING SEPARATE ELECTRON AND POSITIVE ION SOURCES, FOR PRODUCING A PLASMA IN SAID DRIFT REGION HAVING AN INITIAL ELECTRON TEMPERATURE NOT GREATER THAN 1500 K.; (C) MEANS FOR TRAPPING POSITIVE IONS IN SAID DRIFT REGION; AND (D) MEANS FOR EXTRACTING A BEAM OF ELECTRONS FROM SAID PLASMA.
Claim 2
Dependent Claim
69 words
A LOW-NOISE ELECTRON GUN FOR A BEAM TUBE, SAID GUN COMPRISING: (A) MEANS FOR FORMING A NOISE-REDUCING LOW-VELOCITY DRIFT REGION; (B) MEANS, INCLUDING SEPARATE ELECTRON AND POSITIVE ION SOURCES, FOR PRODUCING A PLASMA IN SAID DRIFT REGION HAVING AN INITIAL ELECTRON TEMPERATURE NOT GREATER THAN 1500 K.; (C) MEANS FOR TRAPPING POSITIVE IONS IN SAID DRIFT REGION; AND (D) MEANS FOR EXTRACTING A BEAM OF ELECTRONS FROM SAID PLASMA.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |