US3258629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode display device with fluorescent indicia anodes
Assignee: Tung Sol Electric Inc
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Filing: 1962-01-29
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Granted: 1966-06-28
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Roy B Power
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J2893/00; H01J2893/0069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A HIGH VACUUM DISPLAY DEVICE COMPRISING: AN EVACUATED TRANSPARENT ENVELOPE CONTAINING A PLURALITY OF ANODES, A COLD CATHODE, AND A SUSTAINING ELECTRODE; SAID ANODES EACH FORMED IN A DISTINCTIVE SYMBOLIC SHAPE AND EACH INCLUDING A CONDUCTOR SURROUNDED BY A FLUROESCENT COATING WHICH PRODUCES LIGHT WHEN BOMBARDED BY ELECTRONS; SAID CATHODE INCLUDING A SUPPORTING CONDUCTOR COVERED WITH A LAYER OF AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING ALUMINUM, BERYLLIUM, AND MAGNESIUM; SAID SUSTAINING ELECTRODE COMPRISING A MESH OF CONDUCTING WIRES SPACED FROM SAID CATHODE SURFACE.
Claim 2
Dependent Claim
87 words
A HIGH VACUUM DISPLAY DEVICE COMPRISING: AN EVACUATED TRANSPARENT ENVELOPE CONTAINING A PLURALITY OF ANODES, A COLD CATHODE, AND A SUSTAINING ELECTRODE; SAID ANODES EACH FORMED IN A DISTINCTIVE SYMBOLIC SHAPE AND EACH INCLUDING A CONDUCTOR SURROUNDED BY A FLUROESCENT COATING WHICH PRODUCES LIGHT WHEN BOMBARDED BY ELECTRONS; SAID CATHODE INCLUDING A SUPPORTING CONDUCTOR COVERED WITH A LAYER OF AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING ALUMINUM, BERYLLIUM, AND MAGNESIUM; SAID SUSTAINING ELECTRODE COMPRISING A MESH OF CONDUCTING WIRES SPACED FROM SAID CATHODE SURFACE.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |