US3333133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pick up tube with infra-red sensitive thermionic cathode with cooling means spaced from the thermionic cathode
Assignee: Individual
•
Filing: 1948-04-15
•
Granted: 1967-07-25
•
Expires: 1968-04-15
Abstract
No abstract record available.
Inventors
- 👤 George A Morton
- 👤 Gardner L Krieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:53
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/006; H01J31/00; H01J31/08; H01J31/50; H01J31/501
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ELECTRON IMAGE TUBE COMPRISING AN EVACUATED EVELOPE INCLUDING AT ONE END THEREOF A WINDOW TRANSPARENT TO INFRA-RED RADIANT ENERGY, A TUBULAR CATHODE WITHIN SAID ENVELOPE HAVING ONE END ADJACENT SAID WINDOWN, A FILM SUBSTANTIALLY TRANSPARENT TO SAID INFRA-RED ENERGY MOUNTED ACROSS SAID ONE END OF SAID TUBULAR CATHODE, A PHOSPHOR SCREEN MOUNTED AT THE OTHER END OF SAID ENVELOPE, A THERMIONIC CATHODE ON THE SIDE OF SAID TRANSPARENT FILM FACING SAID PHOSPHOR, A PLURALITY OF ANODE ELECTRODES POSITIONED BETWEEN SAID THERMIONIC CATHODE AND SAID PHOSPHOR SCREEN FOR FOCUSING ELECTRONS FROM SAID THERMIONIC CATHODE, AND MEANS SPACED FROM SAID TRANSPARENT FILM TO COOL SAID THERMIONIC CATHODE ON SAID PHOSPHOR SCREEN BELOW AMBIENT TEMPERATURE.
Claim 2
Dependent Claim
113 words
AN ELECTRON IMAGE TUBE COMPRISING AN EVACUATED EVELOPE INCLUDING AT ONE END THEREOF A WINDOW TRANSPARENT TO INFRA-RED RADIANT ENERGY, A TUBULAR CATHODE WITHIN SAID ENVELOPE HAVING ONE END ADJACENT SAID WINDOWN, A FILM SUBSTANTIALLY TRANSPARENT TO SAID INFRA-RED ENERGY MOUNTED ACROSS SAID ONE END OF SAID TUBULAR CATHODE, A PHOSPHOR SCREEN MOUNTED AT THE OTHER END OF SAID ENVELOPE, A THERMIONIC CATHODE ON THE SIDE OF SAID TRANSPARENT FILM FACING SAID PHOSPHOR, A PLURALITY OF ANODE ELECTRODES POSITIONED BETWEEN SAID THERMIONIC CATHODE AND SAID PHOSPHOR SCREEN FOR FOCUSING ELECTRONS FROM SAID THERMIONIC CATHODE, AND MEANS SPACED FROM SAID TRANSPARENT FILM TO COOL SAID THERMIONIC CATHODE ON SAID PHOSPHOR SCREEN BELOW AMBIENT TEMPERATURE.
References Cited (Backward Citations)
CH139313A
Cited
US1955899A
Cited
US2189319A
Cited
US2206387A
Cited
US2107782A
Cited
US2227030A
Cited
US2234328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |