Patent US3424947A successfully refreshed from Google Patents.
US3424947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge tube apparatus
Assignee: Individual
•
Filing: 1966-07-06
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Granted: 1969-01-28
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Expires: 1986-07-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur Richard Warner
- 👤 Derrick Arnott Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:07
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/36; H05B41/44; H05B41/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN ELECTRIC DISCHARGE TUBE APPARATUS COMPRISING A PLYRALITY OF ELECTRIC DISCHARGE TUBES, OSCILLATOR MEANS GENERATIGN HIGH FREQUENCY CURRENT OF INCREASING AMPLITUDE, SWITCH MEANS OPERABLE TO CONNECT SAID HIGH FREQUENCY CURRENT SEQUENTIALLY TO EACH SAID TUBE, A SOURCE OF MAIN CURRENT; FURTHER SWITHC MEANS OPERABLE TO CONNECT SAID MAIN CURRENT TO EACH SAID TUBE; THE IMPROVEMENT WHICH CONSISTS IN PROVIDING A SOURCE OF SENSING CURRENT DISTINGUISHABLE FROM SAID HIGH-FREQUENCY CURRENT AND FROM SAID MAIN CURRENT; TOGETHER WITH MEANS RESPONSIVE TO THE CHANGE IN SAID SENSING CURRENT WHICH RESULTS FROM FULL IONIZATION OF A SAID TUBE TO EFFECT SEQUENTIAL SWITCHING OF SAID HIGH FREQUENCY AND MAIN CURRENT SOURCES TO SAID TUBE.
Claim 2
Dependent Claim
109 words
IN ELECTRIC DISCHARGE TUBE APPARATUS COMPRISING A PLYRALITY OF ELECTRIC DISCHARGE TUBES, OSCILLATOR MEANS GENERATIGN HIGH FREQUENCY CURRENT OF INCREASING AMPLITUDE, SWITCH MEANS OPERABLE TO CONNECT SAID HIGH FREQUENCY CURRENT SEQUENTIALLY TO EACH SAID TUBE, A SOURCE OF MAIN CURRENT; FURTHER SWITHC MEANS OPERABLE TO CONNECT SAID MAIN CURRENT TO EACH SAID TUBE; THE IMPROVEMENT WHICH CONSISTS IN PROVIDING A SOURCE OF SENSING CURRENT DISTINGUISHABLE FROM SAID HIGH-FREQUENCY CURRENT AND FROM SAID MAIN CURRENT; TOGETHER WITH MEANS RESPONSIVE TO THE CHANGE IN SAID SENSING CURRENT WHICH RESULTS FROM FULL IONIZATION OF A SAID TUBE TO EFFECT SEQUENTIAL SWITCHING OF SAID HIGH FREQUENCY AND MAIN CURRENT SOURCES TO SAID TUBE.
References Cited (Backward Citations)
US2892125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |