FR726872A - Perfectionnements aux postes téléphoniques - Google Patents

Perfectionnements aux postes téléphoniques

Info

Publication number
FR726872A
FR726872A FR726872DA FR726872A FR 726872 A FR726872 A FR 726872A FR 726872D A FR726872D A FR 726872DA FR 726872 A FR726872 A FR 726872A
Authority
FR
France
Prior art keywords
telephone sets
telephone
sets
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)
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR726872A publication Critical patent/FR726872A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR726872D 1931-05-11 1931-11-24 Perfectionnements aux postes téléphoniques Expired FR726872A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US726872XA 1931-05-11 1931-05-11

Publications (1)

Publication Number Publication Date
FR726872A true FR726872A (fr) 1932-06-04

Family

ID=22109176

Family Applications (1)

Application Number Title Priority Date Filing Date
FR726872D Expired FR726872A (fr) 1931-05-11 1931-11-24 Perfectionnements aux postes téléphoniques

Country Status (1)

Country Link
FR (1) FR726872A (fr)

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