FR836908A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR836908A
FR836908A FR836908DA FR836908A FR 836908 A FR836908 A FR 836908A FR 836908D A FR836908D A FR 836908DA FR 836908 A FR836908 A FR 836908A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR836908A publication Critical patent/FR836908A/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)
FR836908D 1937-04-26 1938-04-20 Improvements to telephone systems Expired FR836908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE836908X 1937-04-26

Publications (1)

Publication Number Publication Date
FR836908A true FR836908A (en) 1939-01-30

Family

ID=6761295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR836908D Expired FR836908A (en) 1937-04-26 1938-04-20 Improvements to telephone systems

Country Status (1)

Country Link
FR (1) FR836908A (en)

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