GB191406356A - Improvements in or relating to Telephonic Systems. - Google Patents

Improvements in or relating to Telephonic Systems.

Info

Publication number
GB191406356A
GB191406356A GB191406356DA GB191406356A GB 191406356 A GB191406356 A GB 191406356A GB 191406356D A GB191406356D A GB 191406356DA GB 191406356 A GB191406356 A GB 191406356A
Authority
GB
United Kingdom
Prior art keywords
relating
telephonic systems
telephonic
systems
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
Edward Alfred Graham
William John Rickets
Ernest Albert Sanfileben
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 GB191406356A publication Critical patent/GB191406356A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB191406356D 1914-01-10 1914-03-12 Improvements in or relating to Telephonic Systems. Expired GB191406356A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191400767T 1914-01-10

Publications (1)

Publication Number Publication Date
GB191406356A true GB191406356A (en) 1914-11-26

Family

ID=34360474

Family Applications (4)

Application Number Title Priority Date Filing Date
GB191400767D Expired GB191400767A (en) 1914-01-10 1914-01-10 Improvements in or relating to Telephonic Systems.
GB191406356D Expired GB191406356A (en) 1914-01-10 1914-03-12 Improvements in or relating to Telephonic Systems.
GB191408831D Expired GB191408831A (en) 1914-01-10 1914-04-07 Improvements in or relating to Telephonic Systems.
GB191408906D Expired GB191408906A (en) 1914-01-10 1914-04-08 Improvements in or relating to Telephonic Systems.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB191400767D Expired GB191400767A (en) 1914-01-10 1914-01-10 Improvements in or relating to Telephonic Systems.

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB191408831D Expired GB191408831A (en) 1914-01-10 1914-04-07 Improvements in or relating to Telephonic Systems.
GB191408906D Expired GB191408906A (en) 1914-01-10 1914-04-08 Improvements in or relating to Telephonic Systems.

Country Status (2)

Country Link
FR (1) FR473896A (en)
GB (4) GB191400767A (en)

Also Published As

Publication number Publication date
GB191400767A (en) 1914-08-27
FR473896A (en) 1915-01-28
GB191408906A (en) 1914-06-11
GB191408831A (en) 1914-06-11

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