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US3346693A Expired / Lapsed US ⏱️ 0.0 years remaining

Converters for telegraph signals or the like

Assignee: British Telecommunications PLC
•
Filing: 1963-12-12
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Granted: 1967-10-10
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Expires: 1983-12-12
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Abstract

No abstract record available.

Inventors

  • 👤 Green Norman George
  • 👤 Hodgson Edward

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 20:28
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/22; H04L5/24; H04L25/00; H04L25/02; H04L25/20; H04L25/26

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 195 words
IN A START-STOP TELEGRAPH SYSTEM, A SPEED CONVERTER INCLUDING IN COMBINATION, MEANS RESPONSIVE TO INCOMING SIGNAL CHARACTERS, A FIRST DISTRIBUTOR SWITCH, MEANS RESPONSIVE TO THE RECEIPT OF A START SIGNAL FOR CAUSING SAID FIRST DISTRIBUTOR SWITCH TO PERFORM A CYCLE OF OPERATION, MEANS CONTROLLED BY SAID FIRST DISTRIBUTOR SWITCH FOR THE SAMPLING AT THEIR NOMINAL MID-POINTS OF SUCCEDING ELEMENTS OF A SIGNAL CHARACTER HAVING A TOTAL DURATION SUBSTANTIALLY EQUAL TO THE CYCLE TIME OF SAID FIRST DISTRIBUTOR SWITCH, A SET OF STORAGE DEVICES CORRESPONDING IN NUMBER TO THE NUMBER OF INFORMATION ELEMENTS IN SAID SIGNAL CHARACTER, MEANS FOR SETTING SAID STORAGE DEVICES RESPECTIVELY IN ACCORDANCE WITH THE NATURE OF THE SAMPLES PROVIDED BY SAID FIRST DISTRIBUTOR SWITCH, A SECOND DISTRIBUTOR SWITCH, MEANS RESPONSIVE TO THE SAMPLING OF THE FINAL INFOMATION ELEMENT OF SAIDSIGNAL CHARACTER BY SAID FIRST DISTRIBUTOR SWITCH FOR CAUSING SAID SECOND DISTRIBUTOR SWITCH TO PERFORM A CYCLE OF OPEATION IN A TIME PERIOD LESS THAN THE CYCLE TIME OF SAID FIST DISTRIBUTOR SWITCH, AND SIGNAL GENERATING MEANS JOINTLY CONTROLLED BY SAID STORAGE DEVICES AND SAID SECOND DISTRIBUTOR SWITCH FOR PRODUCING A SIGNAL CHARACTER CORRESPONDING TO THE ELEMENTS SAMPLED BY SAID FIRST DISTRIBUTOR SWITCH.
Claim 2
Dependent Claim 195 words
IN A START-STOP TELEGRAPH SYSTEM, A SPEED CONVERTER INCLUDING IN COMBINATION, MEANS RESPONSIVE TO INCOMING SIGNAL CHARACTERS, A FIRST DISTRIBUTOR SWITCH, MEANS RESPONSIVE TO THE RECEIPT OF A START SIGNAL FOR CAUSING SAID FIRST DISTRIBUTOR SWITCH TO PERFORM A CYCLE OF OPERATION, MEANS CONTROLLED BY SAID FIRST DISTRIBUTOR SWITCH FOR THE SAMPLING AT THEIR NOMINAL MID-POINTS OF SUCCEDING ELEMENTS OF A SIGNAL CHARACTER HAVING A TOTAL DURATION SUBSTANTIALLY EQUAL TO THE CYCLE TIME OF SAID FIRST DISTRIBUTOR SWITCH, A SET OF STORAGE DEVICES CORRESPONDING IN NUMBER TO THE NUMBER OF INFORMATION ELEMENTS IN SAID SIGNAL CHARACTER, MEANS FOR SETTING SAID STORAGE DEVICES RESPECTIVELY IN ACCORDANCE WITH THE NATURE OF THE SAMPLES PROVIDED BY SAID FIRST DISTRIBUTOR SWITCH, A SECOND DISTRIBUTOR SWITCH, MEANS RESPONSIVE TO THE SAMPLING OF THE FINAL INFOMATION ELEMENT OF SAIDSIGNAL CHARACTER BY SAID FIRST DISTRIBUTOR SWITCH FOR CAUSING SAID SECOND DISTRIBUTOR SWITCH TO PERFORM A CYCLE OF OPEATION IN A TIME PERIOD LESS THAN THE CYCLE TIME OF SAID FIST DISTRIBUTOR SWITCH, AND SIGNAL GENERATING MEANS JOINTLY CONTROLLED BY SAID STORAGE DEVICES AND SAID SECOND DISTRIBUTOR SWITCH FOR PRODUCING A SIGNAL CHARACTER CORRESPONDING TO THE ELEMENTS SAMPLED BY SAID FIRST DISTRIBUTOR SWITCH.

References Cited (Backward Citations)

US2642493A Cited
US2822422A Cited
US2891109A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-10-09 1971-04-10 1971-10-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-10-09 1975-04-10 1975-10-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-10-09 1979-04-10 1979-10-10 $7700.00 Window Closed / Lapsed

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