US3092748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indirectly heated cathode
Assignee: GTE Sylvania Inc
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Filing: 1960-03-11
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Granted: 1963-06-04
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Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert F Dickson
- 👤 Haas Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:17
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J1/22; H01J29/00; H01J29/02; H01J29/04; H01J29/46; H01J29/48; H01J29/485; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
AN INDIRECTLY HEATED CATHODE ASSEMBLY ADAPTED FOR USE IN AN ELECTRON DISCHARGE DEVICE COMPRISING AN INSULATING SUPPORT PROVIDED WITH A CENTRAL LONGITUDINAL OPENING, RADIALLY SPACED LEADS MOUNTED UPON SAID SUPPORT EXTENDING PARTIALLY ACROSS SAID CENTRAL OPENING, AND AN INDIRECTLY HEATED CATHODE STRUCTURE EMPLOYING A METALLIC CATHODE BASE HAVING A CONNECTOR ATTACHED THERETO AND A HEATER PARTIALLY ENCLOSED THEREIN WITH THE FREE ENDS THEREOF EXTENDING OUTWARDLY FROM SAID BASE, A SEPARATE ONE OF SAID LEADS BEING CONNECTED TO EACH OF SAID HEATER FREE ENDS AND TO SAID CATHODE CONNECTOR TO PROVIDE ELECTRICAL CONTACTS WITH SAID HEATER AND CATHODE BASE AND TO SUSPEND THE STRUCTURE ACROSS SAID CENTRAL OPENING.
Claim 2
Dependent Claim
107 words
AN INDIRECTLY HEATED CATHODE ASSEMBLY ADAPTED FOR USE IN AN ELECTRON DISCHARGE DEVICE COMPRISING AN INSULATING SUPPORT PROVIDED WITH A CENTRAL LONGITUDINAL OPENING, RADIALLY SPACED LEADS MOUNTED UPON SAID SUPPORT EXTENDING PARTIALLY ACROSS SAID CENTRAL OPENING, AND AN INDIRECTLY HEATED CATHODE STRUCTURE EMPLOYING A METALLIC CATHODE BASE HAVING A CONNECTOR ATTACHED THERETO AND A HEATER PARTIALLY ENCLOSED THEREIN WITH THE FREE ENDS THEREOF EXTENDING OUTWARDLY FROM SAID BASE, A SEPARATE ONE OF SAID LEADS BEING CONNECTED TO EACH OF SAID HEATER FREE ENDS AND TO SAID CATHODE CONNECTOR TO PROVIDE ELECTRICAL CONTACTS WITH SAID HEATER AND CATHODE BASE AND TO SUSPEND THE STRUCTURE ACROSS SAID CENTRAL OPENING.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |