US3158780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-tuneable magnetron
Assignee: Individual
•
Filing: 1961-12-21
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Granted: 1964-11-24
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Horst W A Gerlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:31
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/54; H01J25/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
AN ELECTRON DISCHARGE DEVICE OF THE VOLTAGE TUNEABLE MAGNETRON TYPE COMPRISING IN COMBINATION; (A) CAVITY MEANS, (B) COLD CATHODE MEANS, (C) ELECTRON BEAM INJECTION MEANS DISPOSED AT ONE END OF SAID COLD MEANS, (D) MEANS FOR APPLYING A MAGNETIC FIELD WITHIN SAID CAVITY MEANS, (E) A CYLINDRICAL ANODE ASSEMBLY SURROUNDING SAID CATHODE MEANS CENTRALLY DISPOSED IN SAID CAVITY MEANS, SAID ANODE ASSEMBLY INCLUDING A SERIES OF AXIALLY EXTENDING ANODE FINGERS, SAID ANODE FINGERS CONNECTED TO FORM TWO SETS OF SAID ANODE FINGERS, SAID SETS OF ANODE FINGERS INTERDIGITATED WITH RESPECT TO ONE ANOTHER, (F) AN UPPER DISC, A LOWER DISC, AND A CENTRAL DISC, (G) A FIRST SET OF SAID ANODE FINGERS CONNECTED TO SAID UPPER AND SAID LOWER DISCS, AND THE SECOND SET OF ANODE FINGERS CONNECTED TO SAID TERMINAL DISC,
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |