Patent US2728848A successfully refreshed from Google Patents.
Patent US3305690A successfully refreshed from Google Patents.
US3305690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device with fiber optic end wall
Assignee: Individual
•
Filing: 1965-01-27
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Granted: 1967-02-21
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Expires: 1985-01-27
Abstract
No abstract record available.
Inventors
- 👤 Sheldon Edward Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:08
CPC Classifications
H; H04; H04N; H04N3/00; A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00165; A61B1/04; A61B1/05; G; G01; G01M; G01M3/00; G01M3/005; G01M3/38; G02; G02B; G02B23/00; G02B23/24; G02B23/26; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/50; H01J2231/00; H01J2231/50; H01J2231/50005; H01J2231/5001; H01J2231/50015; H01J2231/50057; H01J2231/50068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A VACUUM TUBE COMPRISING IN COMBINATION A PLURALITY OF MEMBERS CONDUCTING A LIGHT IMAGE BY INTERNAL REFLECTION OF SAID LIGHT WITHIN SAID MEMBERS AND CONDUCTING ALL OF SAID IMAGE, SAID CONDUCTING MEMBERS BEING SOLID, AND IMAGE RESPONSIVE MEANS MOUNTED WITHIN SAID TUBE, SAID MEMBERS HAVING A CORE OF MATERIAL TRANSPARENT TO SAID LIGHT AND HAVING A HIGH INDEX OF REFRACTION AND EACH OF SAID MEMBERS PROVIDED WITH ITS OWN INDIVIDUAL COATING MEANS, SAID COATING MEANS BEING OF A LOWER INDEX OF REFRACTION THAN SAID CORE, SAID COATING MEANS MOUNTED ON EACH OF SAID MEMBERS AND PREVENTING SPREADING OF SAID LIGHT FROM ONE OF SAID MEMBERS TO ANOTHER MEMBER, SAID COATING MEANS BEING OF THE THICKNESS NOT EXCEEDING A FEW MICRONS, ONE ENDFACE OF ALL OF SAID LIGHT CONDUCTING MEMBERS BEING MOUNTED WITHIN SAID TUBE, FACING INSIDE OF SAID TUBE AND HAVING SAID IMAGE RESPONSIVE MEANS MOUNTED ON SAID ENDFACE OF ESSENTIALLY ALL SAID MEMBERS.
Claim 2
Dependent Claim
154 words
A VACUUM TUBE COMPRISING IN COMBINATION A PLURALITY OF MEMBERS CONDUCTING A LIGHT IMAGE BY INTERNAL REFLECTION OF SAID LIGHT WITHIN SAID MEMBERS AND CONDUCTING ALL OF SAID IMAGE, SAID CONDUCTING MEMBERS BEING SOLID, AND IMAGE RESPONSIVE MEANS MOUNTED WITHIN SAID TUBE, SAID MEMBERS HAVING A CORE OF MATERIAL TRANSPARENT TO SAID LIGHT AND HAVING A HIGH INDEX OF REFRACTION AND EACH OF SAID MEMBERS PROVIDED WITH ITS OWN INDIVIDUAL COATING MEANS, SAID COATING MEANS BEING OF A LOWER INDEX OF REFRACTION THAN SAID CORE, SAID COATING MEANS MOUNTED ON EACH OF SAID MEMBERS AND PREVENTING SPREADING OF SAID LIGHT FROM ONE OF SAID MEMBERS TO ANOTHER MEMBER, SAID COATING MEANS BEING OF THE THICKNESS NOT EXCEEDING A FEW MICRONS, ONE ENDFACE OF ALL OF SAID LIGHT CONDUCTING MEMBERS BEING MOUNTED WITHIN SAID TUBE, FACING INSIDE OF SAID TUBE AND HAVING SAID IMAGE RESPONSIVE MEANS MOUNTED ON SAID ENDFACE OF ESSENTIALLY ALL SAID MEMBERS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |