FR937790A - Telephone device - Google Patents

Telephone device

Info

Publication number
FR937790A
FR937790A FR937790DA FR937790A FR 937790 A FR937790 A FR 937790A FR 937790D A FR937790D A FR 937790DA FR 937790 A FR937790 A FR 937790A
Authority
FR
France
Prior art keywords
telephone device
telephone
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 Laboratories Inc
Original Assignee
Automatic Electric Laboratories 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 Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of FR937790A publication Critical patent/FR937790A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR937790D 1940-03-01 1946-12-03 Telephone device Expired FR937790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US937790XA 1940-03-01 1940-03-01

Publications (1)

Publication Number Publication Date
FR937790A true FR937790A (en) 1948-08-26

Family

ID=22240659

Family Applications (1)

Application Number Title Priority Date Filing Date
FR937790D Expired FR937790A (en) 1940-03-01 1946-12-03 Telephone device

Country Status (1)

Country Link
FR (1) FR937790A (en)

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