Patent US3346819A successfully refreshed from Google Patents.
US3346819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stream cyclotron wave amplifier
Assignee: University of California Berkeley
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Filing: 1964-06-08
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Granted: 1967-10-10
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Expires: 1984-06-08
Abstract
No abstract record available.
Inventors
- 👤 Charles K Birdsall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:26
CPC Classifications
H; H01; H01J; H01J25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A TWO-STREAM CYCLOTRON WAVE AMPLIFIER COMPRISING MEANS GENERATING A MAGNETIC FIELD IN AN EVACUATED INTERACTION REGION, MEANS DIRECTING TWO WELL COUPLED ELECTRON STREAMS RESPECTIVELY HAVING DIFFERENT VELOCITIES INTO SAID INTERACTION REGION SUBSTANTIALLY PARALLEL TO SAID MAGNETIC FIELD, INPUT MEANS GENERATING AN ELECTRIC FIELD IN SAID INTERACTION REGION TRANSVERSE TO SAID MAGNETIC FIELD AND HAVING A FREQUENCY OF A W DEFINED BY THE RELATION
Claim 2
Dependent Claim
63 words
A TWO-STREAM CYCLOTRON WAVE AMPLIFIER COMPRISING MEANS GENERATING A MAGNETIC FIELD IN AN EVACUATED INTERACTION REGION, MEANS DIRECTING TWO WELL COUPLED ELECTRON STREAMS RESPECTIVELY HAVING DIFFERENT VELOCITIES INTO SAID INTERACTION REGION SUBSTANTIALLY PARALLEL TO SAID MAGNETIC FIELD, INPUT MEANS GENERATING AN ELECTRIC FIELD IN SAID INTERACTION REGION TRANSVERSE TO SAID MAGNETIC FIELD AND HAVING A FREQUENCY OF A W DEFINED BY THE RELATION
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |