Patent US3078387A successfully refreshed from Google Patents.
US3078387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron
Assignee: US Philips Corp
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Filing: 1960-09-08
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Granted: 1963-02-19
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Expires: 1980-09-08
Abstract
No abstract record available.
Inventors
- 👤 Eduard G Dorgelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:56
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/183; H01J23/00; H01J23/02; H01J23/04; H01J23/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELECTRON DISCHARGE TUBE COMPRISING A HOLLOW ANODE BLOCK FOR PRODUCING A D.-C. FIELD AND HAVING A PLURALITY OF SLOTS IN WHICH OSCILLATIONS CAN OCCUR, A CATHODE DISPOSED WITHIN SAID ANODE BLOCK CONCENTRIC WITH SAID SLOTS, FIELD PRODUCING MEANS EXTERNAL TO SAID ANODE BLOCK FOR PRODUCING A MAGNETIC FIELD COAXIAL WITH THE CATHODE, AND END SHIELD MEMBERS ADJACENT THE ENDS OF SAID CATHODE BETWEEN SAID CATHODE AND SAID ANODE BLOCK AND SPACED FROM SAID ANODE BLOCK, SAID END SHIELD MEMBERS HAVING AT LEAST SURFACE PORTIONS THEREOF CONSTITUTED OF A MATERIAL ADAPTED TO ABSORB RESIDUAL GASES IONIZED BY THE D.-C. FIELD.
Claim 2
Dependent Claim
100 words
AN ELECTRON DISCHARGE TUBE COMPRISING A HOLLOW ANODE BLOCK FOR PRODUCING A D.-C. FIELD AND HAVING A PLURALITY OF SLOTS IN WHICH OSCILLATIONS CAN OCCUR, A CATHODE DISPOSED WITHIN SAID ANODE BLOCK CONCENTRIC WITH SAID SLOTS, FIELD PRODUCING MEANS EXTERNAL TO SAID ANODE BLOCK FOR PRODUCING A MAGNETIC FIELD COAXIAL WITH THE CATHODE, AND END SHIELD MEMBERS ADJACENT THE ENDS OF SAID CATHODE BETWEEN SAID CATHODE AND SAID ANODE BLOCK AND SPACED FROM SAID ANODE BLOCK, SAID END SHIELD MEMBERS HAVING AT LEAST SURFACE PORTIONS THEREOF CONSTITUTED OF A MATERIAL ADAPTED TO ABSORB RESIDUAL GASES IONIZED BY THE D.-C. FIELD.
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |