US3103644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural channel time sharing multiplex system
Assignee: Well Surveys Inc
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Filing: 1960-02-26
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Granted: 1963-09-10
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Expires: 1980-02-26
Abstract
No abstract record available.
Inventors
- 👤 Robert G Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:50
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A PLURAL CHANNEL MULTIPLEX SYSTEM ADAPTED FOR SUBSURFACE SURVEYING, A PLURALITY OF MULTIVIBRATORS CONNECTED TO RECEIVE A SUCCESSION OF TRIGGERING IMPULSES AND ADOPT A SERIES OF DISTINCT STATES OF CONDUCTIVITY IN RESPONSE THERETO, A PLURALITY OF PLURAL ELEMENT DIODES PROVIDED WITH COMMON ANODE CONNECTIONS AND CONNECTED TO BECOME CYCLICALLY COMPLETELY NON-CONDUCTIVE IN RESPONSE TO THE CONDUCTIVITY STATES OF SAID MULTIVIBRATORS, A GAS DIODE AND RESISTOR CONNECTED IN SHUNT BETWEEN THE COMMON ANODES OF EACH DIODE AND GROUND, A GROUP OF NORMALLY NONCONDUCTIVE PENTODES EACH CONNECTED TO RECEIVE A SEQUENTIAL GATING PULSE WHEN ONE OF SAID GAS DIODES IS IN AN IONIZED CONDUCTION, MEANS CONNECTED TO SUPPLY OPERATING POTENTIAL TO SAID MULTIVIBRATORS, SAID DIODES AND SAID PENTODES, AND A SUBSURFACE OUTPUT STAGE CONNECTED TO RECEIVE AN OUTPUT SIGNAL FROM EACH OF SAID PENTODES DURING THE APPLICATION OF SAID GATING PULSE THERETO.
Claim 2
Dependent Claim
141 words
IN A PLURAL CHANNEL MULTIPLEX SYSTEM ADAPTED FOR SUBSURFACE SURVEYING, A PLURALITY OF MULTIVIBRATORS CONNECTED TO RECEIVE A SUCCESSION OF TRIGGERING IMPULSES AND ADOPT A SERIES OF DISTINCT STATES OF CONDUCTIVITY IN RESPONSE THERETO, A PLURALITY OF PLURAL ELEMENT DIODES PROVIDED WITH COMMON ANODE CONNECTIONS AND CONNECTED TO BECOME CYCLICALLY COMPLETELY NON-CONDUCTIVE IN RESPONSE TO THE CONDUCTIVITY STATES OF SAID MULTIVIBRATORS, A GAS DIODE AND RESISTOR CONNECTED IN SHUNT BETWEEN THE COMMON ANODES OF EACH DIODE AND GROUND, A GROUP OF NORMALLY NONCONDUCTIVE PENTODES EACH CONNECTED TO RECEIVE A SEQUENTIAL GATING PULSE WHEN ONE OF SAID GAS DIODES IS IN AN IONIZED CONDUCTION, MEANS CONNECTED TO SUPPLY OPERATING POTENTIAL TO SAID MULTIVIBRATORS, SAID DIODES AND SAID PENTODES, AND A SUBSURFACE OUTPUT STAGE CONNECTED TO RECEIVE AN OUTPUT SIGNAL FROM EACH OF SAID PENTODES DURING THE APPLICATION OF SAID GATING PULSE THERETO.
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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |