FR527239A - Improvements in telegraphy - Google Patents

Improvements in telegraphy

Info

Publication number
FR527239A
FR527239A FR527239DA FR527239A FR 527239 A FR527239 A FR 527239A FR 527239D A FR527239D A FR 527239DA FR 527239 A FR527239 A FR 527239A
Authority
FR
France
Prior art keywords
telegraphy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Ernest Sydney Heurtley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Muirhead and Co Ltd
Original Assignee
Muirhead and Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Muirhead and Co Ltd filed Critical Muirhead and Co Ltd
Application granted granted Critical
Publication of FR527239A publication Critical patent/FR527239A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/04—Channels characterised by the type of signal the signals being represented by different amplitudes or polarities, e.g. quadriplex
FR527239D 1919-11-25 1920-11-15 Improvements in telegraphy Expired FR527239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2932219A GB159316A (en) 1919-11-25 1919-11-25 Improvements in telegraphy

Publications (1)

Publication Number Publication Date
FR527239A true FR527239A (en) 1921-10-22

Family

ID=10289711

Family Applications (1)

Application Number Title Priority Date Filing Date
FR527239D Expired FR527239A (en) 1919-11-25 1920-11-15 Improvements in telegraphy

Country Status (2)

Country Link
FR (1) FR527239A (en)
GB (1) GB159316A (en)

Also Published As

Publication number Publication date
GB159316A (en) 1921-02-25

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