US3233040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostrictive display means
Assignee: Philips North America LLC
•
Filing: 1962-01-02
•
Granted: 1966-02-01
•
Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Paul J Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/50; G02B27/54; H; H04; H04N; H04N5/00; H04N5/74; H04N5/7416; H04N5/7425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CATHODE RAY TUBE COMPRISING THE COMBINATION OF AN ENVELOPE HAVING A DIELECTRIC END WALL ADJACENT ONE END THEREOF, AN ELECTRON GUN DISPOSED ADJACENT THE OPPOSITE END OF SAID ENVELOPE FOR DIRECTING A STREAM OF ELECTRONS TOWARD THE INSIDE SURFACE OF SAID END WALL, ELECTROSTRICTIVE MEANS DISPOSED ON THE OUTSIDE SURFAACE OF SAID END WALL TO FORM AN OPTICAL SURFACE AND MEANS FOR CONDUCTING AN ELECTRICAL CHARGE FROM SAID INSIDE SURFACE OF SAID END WALL TO SAID ELECTROSTRICTIVE MEANS THEREBY CAUSING THE SHAPE OF SAID SURFACE TO CHANGE.
Claim 2
Dependent Claim
88 words
A CATHODE RAY TUBE COMPRISING THE COMBINATION OF AN ENVELOPE HAVING A DIELECTRIC END WALL ADJACENT ONE END THEREOF, AN ELECTRON GUN DISPOSED ADJACENT THE OPPOSITE END OF SAID ENVELOPE FOR DIRECTING A STREAM OF ELECTRONS TOWARD THE INSIDE SURFACE OF SAID END WALL, ELECTROSTRICTIVE MEANS DISPOSED ON THE OUTSIDE SURFAACE OF SAID END WALL TO FORM AN OPTICAL SURFACE AND MEANS FOR CONDUCTING AN ELECTRICAL CHARGE FROM SAID INSIDE SURFACE OF SAID END WALL TO SAID ELECTROSTRICTIVE MEANS THEREBY CAUSING THE SHAPE OF SAID SURFACE TO CHANGE.
References Cited (Backward Citations)
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Cited
US2510846A
Cited
US2776339A
Cited
US2910532A
Cited
US3016417A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |