FR622351A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR622351A
FR622351A FR622351DA FR622351A FR 622351 A FR622351 A FR 622351A FR 622351D A FR622351D A FR 622351DA FR 622351 A FR622351 A FR 622351A
Authority
FR
France
Prior art keywords
telephone systems
telephone
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
Other languages
French (fr)
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.)
Automatic Electric Inc
Original Assignee
Automatic Electric Inc
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 Automatic Electric Inc filed Critical Automatic Electric Inc
Application granted granted Critical
Publication of FR622351A publication Critical patent/FR622351A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
FR622351D 1925-10-10 1926-09-14 Improvements to telephone systems Expired FR622351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2534625A GB263958A (en) 1925-10-10 1925-10-10 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
FR622351A true FR622351A (en) 1927-05-28

Family

ID=10226159

Family Applications (1)

Application Number Title Priority Date Filing Date
FR622351D Expired FR622351A (en) 1925-10-10 1926-09-14 Improvements to telephone systems

Country Status (2)

Country Link
FR (1) FR622351A (en)
GB (1) GB263958A (en)

Also Published As

Publication number Publication date
GB263958A (en) 1927-01-10

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