US3148281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray storage tube using a dark trace layer and a phosphor layer
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1961-02-28
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Granted: 1964-09-08
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Expires: 1981-02-28
Abstract
No abstract record available.
Inventors
- 👤 Norman F Fyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:53
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/122; H01J29/00; H01J29/02; H01J29/10; H01J29/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN COMBINATION, A CATHODE RAY TUBE HAVING A FACEPLATE, SUCCESSIVE LAYERS OF A DARK TRACE MATERIAL AND A PHOSPHOR MOUNTED WITHIN AND GENERALLY PARALLEL TO SAID FACEPLATE, WITH THE DARK TRACE MATERIAL CLOSER TO THE FACEPLATE MEANS FOR DIRECTING AN ELECTRON BEAM ONTO SAID LAYERS, MEANS FOR CHANGING THE ENERGY LEVEL OF SAID ELECTRON BEAM, MEANS FOR HEATING SAID DARK TRACE MATERIAL TO RENDER IT TRANSPARENT, PHOTOSENSITIVE ELECTRICAL ARRANGEMENTS IN FRONT OF SAID FACEPLATE FOR DETECTING UNSHADOWED LIGHT FROM SAID PHOSPHOR LAYER, AND A DIGITAL DATA PROCESSING SYSTEM FOR SUPPLYING STORAGE AND SCANNING SIGNALS TO SAID CATHODE RAY TUBE AND FOR RECEIVING OUTPUT SIGNALS FROM SAID PHOTOSENSITIVE ARRANGEMENTS.
Claim 2
Dependent Claim
108 words
IN COMBINATION, A CATHODE RAY TUBE HAVING A FACEPLATE, SUCCESSIVE LAYERS OF A DARK TRACE MATERIAL AND A PHOSPHOR MOUNTED WITHIN AND GENERALLY PARALLEL TO SAID FACEPLATE, WITH THE DARK TRACE MATERIAL CLOSER TO THE FACEPLATE MEANS FOR DIRECTING AN ELECTRON BEAM ONTO SAID LAYERS, MEANS FOR CHANGING THE ENERGY LEVEL OF SAID ELECTRON BEAM, MEANS FOR HEATING SAID DARK TRACE MATERIAL TO RENDER IT TRANSPARENT, PHOTOSENSITIVE ELECTRICAL ARRANGEMENTS IN FRONT OF SAID FACEPLATE FOR DETECTING UNSHADOWED LIGHT FROM SAID PHOSPHOR LAYER, AND A DIGITAL DATA PROCESSING SYSTEM FOR SUPPLYING STORAGE AND SCANNING SIGNALS TO SAID CATHODE RAY TUBE AND FOR RECEIVING OUTPUT SIGNALS FROM SAID PHOTOSENSITIVE ARRANGEMENTS.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |