Patent US3431501A successfully refreshed from Google Patents.
Patent US3299305A successfully refreshed from Google Patents.
US3299305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray circuit condition indicator tube
Assignee: Unisys Corp
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Filing: 1963-06-28
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Granted: 1967-01-17
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Norman L Kreuder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:10
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145; H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A CATHODE RAY INDICATOR TRIODE FOR USE DIRECTLY WITH A TRANSISTOR CIRCUIT AS AN INDICATOR OF CIRCUIT CONDITION AND CONTROLLABLE BY A CIRCUIT SIGNAL APPLIED DIRECTLY TO THE GRID THEREOF COMPRISING A HOLLOW CYLINDRICAL ENCLOSURE HAVING SPACED APART ENDS, ONE END BEING TRANSLUCENT, A FILM OF CATHODOLUMINESCENT PHOSPHORS DEPOSITED ACROSS THE ONE END OF THE ENCLOSURE INTERIORLY THEREOF, A CYLINDRICAL NONCONDUCTIVE SPACER HAVING SPACED APART ENDS AND AN AXIAL BORE THERETHROUGH DISPOSED CONCENTRIC TO THE ENCLOSURE INTERIORLY OF THE ENCLOSURE, ONE END OF THE SPACER BEING ABUTTED WITH THE ONE END OF THE ENCLOSURE, A NON-CONDUCTIVE GRID SUPPORT DISK HAVING AN ANNULAR BORE THERETHROUGH DISPOSED TRANSVERSELY OF THE INTERIOR OF THE ENCLOSURE IN ABUTTING RELATION WITH THE OTHER END OF THE SPACER, A
Claim 2
Dependent Claim
123 words
A CATHODE RAY INDICATOR TRIODE FOR USE DIRECTLY WITH A TRANSISTOR CIRCUIT AS AN INDICATOR OF CIRCUIT CONDITION AND CONTROLLABLE BY A CIRCUIT SIGNAL APPLIED DIRECTLY TO THE GRID THEREOF COMPRISING A HOLLOW CYLINDRICAL ENCLOSURE HAVING SPACED APART ENDS, ONE END BEING TRANSLUCENT, A FILM OF CATHODOLUMINESCENT PHOSPHORS DEPOSITED ACROSS THE ONE END OF THE ENCLOSURE INTERIORLY THEREOF, A CYLINDRICAL NONCONDUCTIVE SPACER HAVING SPACED APART ENDS AND AN AXIAL BORE THERETHROUGH DISPOSED CONCENTRIC TO THE ENCLOSURE INTERIORLY OF THE ENCLOSURE, ONE END OF THE SPACER BEING ABUTTED WITH THE ONE END OF THE ENCLOSURE, A NON-CONDUCTIVE GRID SUPPORT DISK HAVING AN ANNULAR BORE THERETHROUGH DISPOSED TRANSVERSELY OF THE INTERIOR OF THE ENCLOSURE IN ABUTTING RELATION WITH THE OTHER END OF THE SPACER, A
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |