Patent US2825271A successfully refreshed from Google Patents.
Patent US3218503A successfully refreshed from Google Patents.
US3218503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam devices
Assignee: Zenith Electronics LLC
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Filing: 1962-06-27
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Granted: 1965-11-16
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Expires: 1982-06-27
Abstract
No abstract record available.
Inventors
- 👤 Adler Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:57
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A SYNCHRONOUS WAVE SIGNAL ENERGY AMPLIFIER COMPRISING: MEANS FOR PROJECTING A STREAM OF ELECTRONS ALONG A PREDETERMINED AXIS; MEANS FOR PRODUCING A MAGNETIC FIELD ALIGNED PARALLEL TO SAID AXIS; INPUT COUPLER MEANS RESPONSIVE TO INPUT SIGNALS FOR PRODUCING AN ELECTRIC FIELD ALIGNED IN A PREDETERMINED DIRECTION TRANSVERSE TO SAID AXIS AND HAVING A VELOCITY OF PROPAGATION, IN A DIRECTION PARALLEL TO SAID AXIS, SUBSTANTIALLY EQUAL TO THE VELOCITY OF SAID ELEC-
Claim 2
Dependent Claim
71 words
A SYNCHRONOUS WAVE SIGNAL ENERGY AMPLIFIER COMPRISING: MEANS FOR PROJECTING A STREAM OF ELECTRONS ALONG A PREDETERMINED AXIS; MEANS FOR PRODUCING A MAGNETIC FIELD ALIGNED PARALLEL TO SAID AXIS; INPUT COUPLER MEANS RESPONSIVE TO INPUT SIGNALS FOR PRODUCING AN ELECTRIC FIELD ALIGNED IN A PREDETERMINED DIRECTION TRANSVERSE TO SAID AXIS AND HAVING A VELOCITY OF PROPAGATION, IN A DIRECTION PARALLEL TO SAID AXIS, SUBSTANTIALLY EQUAL TO THE VELOCITY OF SAID ELEC-
References Cited (Backward Citations)
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Cited
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Cited
US2999959A
Cited
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Cited
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |