GB191120787A - Improvements in the Working of Telegraph and Telephone Circuits and the like. - Google Patents

Improvements in the Working of Telegraph and Telephone Circuits and the like.

Info

Publication number
GB191120787A
GB191120787A GB191120787DA GB191120787A GB 191120787 A GB191120787 A GB 191120787A GB 191120787D A GB191120787D A GB 191120787DA GB 191120787 A GB191120787 A GB 191120787A
Authority
GB
United Kingdom
Prior art keywords
telegraph
working
telephone circuits
telephone
circuits
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
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191120787A publication Critical patent/GB191120787A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
GB191120787D 1911-09-20 1911-09-20 Improvements in the Working of Telegraph and Telephone Circuits and the like. Expired GB191120787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191120787T 1911-09-20

Publications (1)

Publication Number Publication Date
GB191120787A true GB191120787A (en) 1912-09-19

Family

ID=32567108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191120787D Expired GB191120787A (en) 1911-09-20 1911-09-20 Improvements in the Working of Telegraph and Telephone Circuits and the like.

Country Status (1)

Country Link
GB (1) GB191120787A (en)

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