US3220012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous recording and display system
Assignee: Xerox Corp
•
Filing: 1962-05-03
•
Granted: 1965-11-23
•
Expires: 1982-05-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Schwertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/221; G03G15/04; G03G15/04036; G03G15/04081; G03G15/32; G03G15/321; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/30; G11; G11C; G11C13/00; G11C13/04; G11C13/048; H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065; H04; H04N; H04N1/00; H04N1/23; H04N1/29; H04N5/00; H04N5/76; H04N5/80; G09G2360/00; G09G2360/14; G09G2360/145; G09G2360/147; G09G2360/148
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A RECORDING AND DISPLAY APPARATUS COMPRISING A PLURALITY OF SEPARATE ELECTRODES ON A FIRST SIDE OF A GAP, AT LEAST ONE BACKING ELECTRODE ON A SECOND SIDE OF SAID GAP SAID BACKING ELECTRODE BEING OPTICALLY TRANSPARENT, AN INSULATING RECORDING WEB IN SAID GAP AND SPACED FROM SAID PLURALITY OF ELECTRODES, AN ELECTROLUMINESCENT MEMBER IN SAID GAP BETWEEN SAID INSULATING RECORDING WEB AND SAID BACKING ELECTRODE AND MEANS TO APPLY A VOLTAGE ACROSS SELECTED ELECTRODES ON OPPOSITE SIDES OF SAID GAP, SAID VOLTAGE BEING OF AT LEAST A MAGNITUDE TO EXCITE SAID ELECTROLUMINESCENT LAYER TO LUMINESCENCE IN THE AREA BETWEEN SAID SELECTED ELECTRODES.
Claim 2
Dependent Claim
102 words
A RECORDING AND DISPLAY APPARATUS COMPRISING A PLURALITY OF SEPARATE ELECTRODES ON A FIRST SIDE OF A GAP, AT LEAST ONE BACKING ELECTRODE ON A SECOND SIDE OF SAID GAP SAID BACKING ELECTRODE BEING OPTICALLY TRANSPARENT, AN INSULATING RECORDING WEB IN SAID GAP AND SPACED FROM SAID PLURALITY OF ELECTRODES, AN ELECTROLUMINESCENT MEMBER IN SAID GAP BETWEEN SAID INSULATING RECORDING WEB AND SAID BACKING ELECTRODE AND MEANS TO APPLY A VOLTAGE ACROSS SELECTED ELECTRODES ON OPPOSITE SIDES OF SAID GAP, SAID VOLTAGE BEING OF AT LEAST A MAGNITUDE TO EXCITE SAID ELECTROLUMINESCENT LAYER TO LUMINESCENCE IN THE AREA BETWEEN SAID SELECTED ELECTRODES.
References Cited (Backward Citations)
US2764693A
Cited
US2698915A
Cited
US2805360A
Cited
US2882419A
Cited
US2919171A
Cited
US3123806A
Cited
US2910339A
Cited
US2975291A
Cited
US2920232A
Cited
US3076393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |