Patent US3122709A successfully refreshed from Google Patents.
US3122709A
Expired / Lapsed
US
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Electron beam parametric amplifier with quarter wave sections
Assignee: AT&T Inc
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Filing: 1960-10-20
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Granted: 1964-02-25
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Expires: 1980-10-20
Abstract
No abstract record available.
Inventors
- 👤 Ashkin Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:11
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN ELECTRON DISCHARGE DEVICE COMPRISING MEANS FOR FORMING AND PROJECTING ALONG A PATH AN ELECTRON BEAM WHICH IS CHARACTERIZED BY FAST AND SLOW MODES OF WAVE PROPAGATION AND A REDUCED PLASMA FREQUENCY WHICH VARIES AS A FUNCTION OF THE D.-C. POTENTIAL OF ELECTRODES ACTING THEREON, MEANS FOR MODULATING THE BEAM IN THE FAST SPACECHARGE MODE, MEANS FOR STRIPPING NOISE FROM THE FAST MODE OF THE BEAM, A FIRST ELECTRODE BIASED AT A FIRST D.-C. POTENTIAL POSITIONED ADJACENT ONE PORTION OF SAID PATH, A THIRD ELECTRODE BIASED AT A THIRD D.-C. POTENTIAL WHICH IS
Claim 2
Dependent Claim
93 words
AN ELECTRON DISCHARGE DEVICE COMPRISING MEANS FOR FORMING AND PROJECTING ALONG A PATH AN ELECTRON BEAM WHICH IS CHARACTERIZED BY FAST AND SLOW MODES OF WAVE PROPAGATION AND A REDUCED PLASMA FREQUENCY WHICH VARIES AS A FUNCTION OF THE D.-C. POTENTIAL OF ELECTRODES ACTING THEREON, MEANS FOR MODULATING THE BEAM IN THE FAST SPACECHARGE MODE, MEANS FOR STRIPPING NOISE FROM THE FAST MODE OF THE BEAM, A FIRST ELECTRODE BIASED AT A FIRST D.-C. POTENTIAL POSITIONED ADJACENT ONE PORTION OF SAID PATH, A THIRD ELECTRODE BIASED AT A THIRD D.-C. POTENTIAL WHICH IS
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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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |