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FR936557A - Development of telephone devices - Google Patents

Development of telephone devices

Info

Publication number
FR936557A
FR936557A FR936557DA FR936557A FR 936557 A FR936557 A FR 936557A FR 936557D A FR936557D A FR 936557DA FR 936557 A FR936557 A FR 936557A
Authority
FR
France
Prior art keywords
development
telephone devices
telephone
devices
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.)
PREC ELECTR
Original Assignee
PREC ELECTR
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 PREC ELECTR filed Critical PREC ELECTR
Application granted granted Critical
Publication of FR936557A publication Critical patent/FR936557A/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)
FR936557D 1946-11-21 1946-11-21 Development of telephone devices Expired FR936557A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR936557T 1946-11-21

Publications (1)

Publication Number Publication Date
FR936557A true FR936557A (en) 1948-07-23

Family

ID=9457435

Family Applications (1)

Application Number Title Priority Date Filing Date
FR936557D Expired FR936557A (en) 1946-11-21 1946-11-21 Development of telephone devices

Country Status (1)

Country Link
FR (1) FR936557A (en)

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