US3079588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor switching devices in a gas tube coincidence matrix selector
Assignee: Compagnie Industrielle des Telephones SA
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Filing: 1958-10-21
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Granted: 1963-02-26
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Expires: 1978-10-21
Abstract
No abstract record available.
Inventors
- 👤 Burstow Pierre
- 👤 Monin Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/52; H03K17/56; H03K17/60; H03K17/62; H03K17/6221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A TRANSISTOR SWITCHING DEVICE IN A GAS TUBE COINCIDENCE MATRIX SELECTOR, COMPRISING A TRANSISTOR INTERCONNECTING TWO LINES OF A MATRIX, SAID TRANSISTOR HAVING A CONTROL ELECTRODE FOR SELECTIVELY BLOCKING AND UNBLOCKING SAID TRANSISTOR DEPENDING ON THE POTENTIAL OF SAID CONTROL ELECTRODE, A RESISTANCE CONNECTED AT ONE END TO SAID CONTROL ELECTRODE, A MULTI-ELECTRODE GAS TUBE INCLUDING AT LEAST AN ANODE, A CATHODE AND AN AUXILIARY ANODE, AND HAVING SAID ANODE CONNECTED TO THE OTHER END OF SAID RESISTANCE, MEANS INCLUDING A SECOND RESISTANCE CONNECTED TO SAID ANODE OF SAID GAS TUBE FOR APPLYING A CONTROL VOLTAGE TO BLOCK SAID TRANSISTOR AND SIMULTANEOUSLY ACTING AS SUPPLY VOLTAGE FOR SAID ANODE OF THE GAS TUBE, AND MEANS FOR FIRING SAID GAS TUBE TO CHANGE THE POTENTIAL OF SAID CONTROL ELECTRODE AND THEREBY UNBLOCK SAID TRANSISTOR, SAID LASTMENTIONED MEANS COMPRISING TWO SWITCHES AND MEANS OPERATIVELY CONNECTING SAID SWITCHES TO JOINTLY CONTROL THE FIRING OF SAID GAS TUBE.
Claim 2
Dependent Claim
154 words
A TRANSISTOR SWITCHING DEVICE IN A GAS TUBE COINCIDENCE MATRIX SELECTOR, COMPRISING A TRANSISTOR INTERCONNECTING TWO LINES OF A MATRIX, SAID TRANSISTOR HAVING A CONTROL ELECTRODE FOR SELECTIVELY BLOCKING AND UNBLOCKING SAID TRANSISTOR DEPENDING ON THE POTENTIAL OF SAID CONTROL ELECTRODE, A RESISTANCE CONNECTED AT ONE END TO SAID CONTROL ELECTRODE, A MULTI-ELECTRODE GAS TUBE INCLUDING AT LEAST AN ANODE, A CATHODE AND AN AUXILIARY ANODE, AND HAVING SAID ANODE CONNECTED TO THE OTHER END OF SAID RESISTANCE, MEANS INCLUDING A SECOND RESISTANCE CONNECTED TO SAID ANODE OF SAID GAS TUBE FOR APPLYING A CONTROL VOLTAGE TO BLOCK SAID TRANSISTOR AND SIMULTANEOUSLY ACTING AS SUPPLY VOLTAGE FOR SAID ANODE OF THE GAS TUBE, AND MEANS FOR FIRING SAID GAS TUBE TO CHANGE THE POTENTIAL OF SAID CONTROL ELECTRODE AND THEREBY UNBLOCK SAID TRANSISTOR, SAID LASTMENTIONED MEANS COMPRISING TWO SWITCHES AND MEANS OPERATIVELY CONNECTING SAID SWITCHES TO JOINTLY CONTROL THE FIRING OF SAID GAS TUBE.
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |