Patent US3091719A successfully refreshed from Google Patents.
US3091719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave transducer
Assignee: Field Emission Corp
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Filing: 1959-04-14
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Granted: 1963-05-28
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Expires: 1979-04-14
Abstract
No abstract record available.
Inventors
- 👤 Walter P Dyke
- 👤 Joseph E Henderson
- 👤 Francis M Charbonnier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:01
CPC Classifications
H; H01; H01J; H01J25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A MICROWAVE TRANSDUCER COMPRISING A RESONATOR APERTURED FOR THE PASSAGE OF AN ELECTRON BEAM THEREACROSS, ELECTRICAL ENERGY INPUT AND OUTPUT MEANS FOR SAID RESONATOR, FIELD EMISSION CATHODE MEANS POSITIONED TO DIRECT ACROSS SAID RESONATOR A BEAM OF ELECTRONS, AND MEANS FOR EFFECTING FIELD MISSION IN THE FORM OF ELECTRON BUNCHES DIRECTLY UPON EMISSION FROM SAID FIELD EMISSION CATHODE AND AT A FREQUENCY IN RESONANCE WITH SAID RESONATOR.
Claim 2
Dependent Claim
67 words
A MICROWAVE TRANSDUCER COMPRISING A RESONATOR APERTURED FOR THE PASSAGE OF AN ELECTRON BEAM THEREACROSS, ELECTRICAL ENERGY INPUT AND OUTPUT MEANS FOR SAID RESONATOR, FIELD EMISSION CATHODE MEANS POSITIONED TO DIRECT ACROSS SAID RESONATOR A BEAM OF ELECTRONS, AND MEANS FOR EFFECTING FIELD MISSION IN THE FORM OF ELECTRON BUNCHES DIRECTLY UPON EMISSION FROM SAID FIELD EMISSION CATHODE AND AT A FREQUENCY IN RESONANCE WITH SAID RESONATOR.
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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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |