US3201634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron tube for indicating symbols, letters, numerals, and the like
Assignee: INDTERNAT STANDARD ELECTRIC CO
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Filing: 1962-06-11
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Granted: 1965-08-17
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Weidel Joachim
- 👤 Bauer Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:13
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/08; H01J31/10; H01J31/12; H01J31/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELECTRON TUBE DISPLAY DEVICE COMPRISING A SPACECHARGE PRODUCING CATHODE, A PLURALITY OF ANODES PRESENTING SEPARATE ADJACENT SEGMENTS DISPOSED IN AN AREA IN SUBSTANTIA6LY A COMMON PLANE, EACH ANODE INCLUDING A CONDUCTIVE LAYER HAVING PREDETERMINED PORTIONS COATED WITH A FLUORESCENT SUBSTANCE IN THE FORM OF AW SYMBOL PORTION, MEANS APPLYING VOLTAGE TO SELECTED ANODES, AND A GRID DISPOSED BETWEEN THE CATHODE AND ANODES, SAID GRID FORMING THE SPACE-CHARGE TO CORRESPOND TO THE SIZE OF SAID AREA OF SAID ANODE AND PERMITTING EMISSION TO ONLY SAID SELECTED ANODES CAUSING SAID FLUORESCENT PORTIONS THEREOF TO GLOW AND TOGETHER FORM A COMPLETE SYMBOL.
Claim 2
Dependent Claim
100 words
AN ELECTRON TUBE DISPLAY DEVICE COMPRISING A SPACECHARGE PRODUCING CATHODE, A PLURALITY OF ANODES PRESENTING SEPARATE ADJACENT SEGMENTS DISPOSED IN AN AREA IN SUBSTANTIA6LY A COMMON PLANE, EACH ANODE INCLUDING A CONDUCTIVE LAYER HAVING PREDETERMINED PORTIONS COATED WITH A FLUORESCENT SUBSTANCE IN THE FORM OF AW SYMBOL PORTION, MEANS APPLYING VOLTAGE TO SELECTED ANODES, AND A GRID DISPOSED BETWEEN THE CATHODE AND ANODES, SAID GRID FORMING THE SPACE-CHARGE TO CORRESPOND TO THE SIZE OF SAID AREA OF SAID ANODE AND PERMITTING EMISSION TO ONLY SAID SELECTED ANODES CAUSING SAID FLUORESCENT PORTIONS THEREOF TO GLOW AND TOGETHER FORM A COMPLETE SYMBOL.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |