US3123737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
schneeberger
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:52
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J29/39; H01J29/45; H01J29/458; Y; Y10; Y10S; Y10S313/00; Y10S313/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PICKUP TUBE COMPRISING AN EVACUATED ENVELOPE, AN ELECTRON SOURCE TO GENERATE AN ELECTRON BEAM AND A TARGET ELECTRODE POSITIONED SO AS TO BE SCANNED BY SAID ELECTRON BEAM, SAID TARGET COMPRISING A MATERIAL IN SOOTY FORM EXHIBITING THE PROPERTY OF INCREASED ELECTRICAL CONDUCTIVITY ON THERMAL EXCITATION, SAID MATERIAL IN SOOTY FORM HAVING A HEAT CAPACITY OF LESS THAN 10**4 WATT SECONDS PER DEGREE KELVIN PER SQUARE CENTIMETER.
Claim 2
Dependent Claim
68 words
A PICKUP TUBE COMPRISING AN EVACUATED ENVELOPE, AN ELECTRON SOURCE TO GENERATE AN ELECTRON BEAM AND A TARGET ELECTRODE POSITIONED SO AS TO BE SCANNED BY SAID ELECTRON BEAM, SAID TARGET COMPRISING A MATERIAL IN SOOTY FORM EXHIBITING THE PROPERTY OF INCREASED ELECTRICAL CONDUCTIVITY ON THERMAL EXCITATION, SAID MATERIAL IN SOOTY FORM HAVING A HEAT CAPACITY OF LESS THAN 10**4 WATT SECONDS PER DEGREE KELVIN PER SQUARE CENTIMETER.
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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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |