GB191122046A - Improvements in Telephone Switchboards. - Google Patents

Improvements in Telephone Switchboards.

Info

Publication number
GB191122046A
GB191122046A GB191122046DA GB191122046A GB 191122046 A GB191122046 A GB 191122046A GB 191122046D A GB191122046D A GB 191122046DA GB 191122046 A GB191122046 A GB 191122046A
Authority
GB
United Kingdom
Prior art keywords
telephone switchboards
telephone
larn
dowelling
oct
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
English (en)
Inventor
Ernest Stewart Mclarn
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 GB191122046A publication Critical patent/GB191122046A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/02—Constructional details

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB191122046D 1910-10-07 1911-10-06 Improvements in Telephone Switchboards. Expired GB191122046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191122046XA 1910-10-07 1910-10-07

Publications (1)

Publication Number Publication Date
GB191122046A true GB191122046A (en) 1912-10-07

Family

ID=32596820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191122046D Expired GB191122046A (en) 1910-10-07 1911-10-06 Improvements in Telephone Switchboards.

Country Status (2)

Country Link
DE (1) DE250384C (de)
GB (1) GB191122046A (de)

Also Published As

Publication number Publication date
DE250384C (de)

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