Patent US3293479A successfully refreshed from Google Patents.
US3293479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra low noise travelling wave tube having a grid voltage
Assignee: —
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Filing: —
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Granted: 1966-12-20
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:18
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/06; H03; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A ULTRA LOW NOISE TRAVELLING WAVE TUBE COMPRISING A CATHODE, A DELAY LINE, A COLLECTOR, AT LEAST THREE GRIDS SPACED BETWEEN SAID CATHODE AND SAID COLLECTOR, A POTENTIOMETER HAVING TWO END TERMINALS AND A SLIDER TERMINAL MOVABLE BETWEEN SAID TWO END TERMINALS, THE SLIDER TERMINAL OF SAID POTENTIOMETER BEING COUPLED TO ONE OF THE TWO GRIDS CLOSESTS TO SAID CATHODE, ONE END TERMINAL OF SAID POTENTIOMETER BEING COUPLED TO THE OTHER OF SAID TWO GRIDS CLOSET TO SAID CATHODE, MEANS FOR APPLYING AN INDIVIDUALLY ADJUSTABLE POTENTIAL BETWEEN THE TWO ENDS TERMINALS OF SAID POTENTIOMETER, AND MEANS FOR APPLYING INDIVIDUALLY ADJUSTABLE POTENTIALS TO SAID COLLECTOR, DELAY LINE, AND THE REMAINING GRIDS OF SAID TRAVELLING WAVE TUBE.
Claim 2
Dependent Claim
115 words
A ULTRA LOW NOISE TRAVELLING WAVE TUBE COMPRISING A CATHODE, A DELAY LINE, A COLLECTOR, AT LEAST THREE GRIDS SPACED BETWEEN SAID CATHODE AND SAID COLLECTOR, A POTENTIOMETER HAVING TWO END TERMINALS AND A SLIDER TERMINAL MOVABLE BETWEEN SAID TWO END TERMINALS, THE SLIDER TERMINAL OF SAID POTENTIOMETER BEING COUPLED TO ONE OF THE TWO GRIDS CLOSESTS TO SAID CATHODE, ONE END TERMINAL OF SAID POTENTIOMETER BEING COUPLED TO THE OTHER OF SAID TWO GRIDS CLOSET TO SAID CATHODE, MEANS FOR APPLYING AN INDIVIDUALLY ADJUSTABLE POTENTIAL BETWEEN THE TWO ENDS TERMINALS OF SAID POTENTIOMETER, AND MEANS FOR APPLYING INDIVIDUALLY ADJUSTABLE POTENTIALS TO SAID COLLECTOR, DELAY LINE, AND THE REMAINING GRIDS OF SAID TRAVELLING WAVE TUBE.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |