US3145318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode grid assembly for electron gun
Assignee: RCA Corp
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Filing: 1960-11-14
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Granted: 1964-08-18
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Paull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:41
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ELECTRON GUN COMPRISING AN INSULATOR SUPPORT ROD, A TUBULAR CATHODE, A TUBULAR CATHODE SHIELD COAXIALLY SURROUNDING SAID CATHODE, A CATHODE SUPPORT RING CONCENTRICALLY FIXED BETWEEN SAID SHIELD AND ONE END OF SAID CATHODE, MOUNTING MEANS FIXED TO SAID INSULATOR ROD AND TO THE END OF SAID SHIELD ADJACENT SAID ONE END OF SAID CATHODE FOR SUPPORTING SAID CATHODE AND SAID SHIELD RELATIVE TO SAID ROD, A CONTROL GRID CUP DISPOSED COAXIALLY WITH SAID CATHODE AND SHIELD WITH THE OTHER ENDS OF SAID CATHODE AND SHIELD EXTENDING THEREINTO, AND MOUNTING MEANS FIXED TO SAID GRID CUP AND SAID INSULATOR ROD FOR SUP-
Claim 2
Dependent Claim
102 words
AN ELECTRON GUN COMPRISING AN INSULATOR SUPPORT ROD, A TUBULAR CATHODE, A TUBULAR CATHODE SHIELD COAXIALLY SURROUNDING SAID CATHODE, A CATHODE SUPPORT RING CONCENTRICALLY FIXED BETWEEN SAID SHIELD AND ONE END OF SAID CATHODE, MOUNTING MEANS FIXED TO SAID INSULATOR ROD AND TO THE END OF SAID SHIELD ADJACENT SAID ONE END OF SAID CATHODE FOR SUPPORTING SAID CATHODE AND SAID SHIELD RELATIVE TO SAID ROD, A CONTROL GRID CUP DISPOSED COAXIALLY WITH SAID CATHODE AND SHIELD WITH THE OTHER ENDS OF SAID CATHODE AND SHIELD EXTENDING THEREINTO, AND MOUNTING MEANS FIXED TO SAID GRID CUP AND SAID INSULATOR ROD FOR SUP-
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |