US3225251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode glow display using a single cathode electrode
Assignee: Lockheed Martin Corp
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Filing: 1963-01-15
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Granted: 1965-12-21
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Expires: 1983-01-15
Abstract
No abstract record available.
Inventors
- 👤 Hugo L L Van Paassen
- 👤 Iii Richard J Allen
- 👤 Jr Emil C Muly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:33
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/491; G; G09; G09G; G09G3/00; G09G3/04; G09G3/06; G09G3/10; H01J17/40; H01J17/44; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN INFORMATION READ-OUT AND STORAGE DEVICE, COMPRISING HOUSING MEANS DEFINING A CHAMBER CONTAINING AN IONIZABLE GAS AT A SUBATMOSPHERIC PRESSURE; A SINGLE ANODE IN SAID CHAMBER; A SINGLE CATHODE IN SAID CHAMBER AND SPACED FROM SAID ANODE, SAID CATHODE COMPRISING A PLATE HAVING A UNIFORM SURFACE CONTAINING A PLURALITY OF CAVITIES, SAID HOUSING MEANS INCLUDING A TRANSPARENT WALL PORTION OPPOSITE SAID CAVITIES; MEANS BIASING SAID CATHODE TO A CONSTANT NEGATIVE DIRECT-CURRENT POTENTIAL RELATIVE TO SAID ANODE TO ESTABLISH A DIFFUSED GLOW DISCHARGE IN SAID CHAMBER; AND MEANS FOR INITIATING HOLLOW CATHODE GLOW DISCHARGES IN A SELECTED GROUP OF SAID CATHODE CAVITIES.
Claim 2
Dependent Claim
101 words
AN INFORMATION READ-OUT AND STORAGE DEVICE, COMPRISING HOUSING MEANS DEFINING A CHAMBER CONTAINING AN IONIZABLE GAS AT A SUBATMOSPHERIC PRESSURE; A SINGLE ANODE IN SAID CHAMBER; A SINGLE CATHODE IN SAID CHAMBER AND SPACED FROM SAID ANODE, SAID CATHODE COMPRISING A PLATE HAVING A UNIFORM SURFACE CONTAINING A PLURALITY OF CAVITIES, SAID HOUSING MEANS INCLUDING A TRANSPARENT WALL PORTION OPPOSITE SAID CAVITIES; MEANS BIASING SAID CATHODE TO A CONSTANT NEGATIVE DIRECT-CURRENT POTENTIAL RELATIVE TO SAID ANODE TO ESTABLISH A DIFFUSED GLOW DISCHARGE IN SAID CHAMBER; AND MEANS FOR INITIATING HOLLOW CATHODE GLOW DISCHARGES IN A SELECTED GROUP OF SAID CATHODE CAVITIES.
References Cited (Backward Citations)
US2858480A
Cited
US2971109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |