FR1135385A - Listening device - Google Patents

Listening device

Info

Publication number
FR1135385A
FR1135385A FR1135385DA FR1135385A FR 1135385 A FR1135385 A FR 1135385A FR 1135385D A FR1135385D A FR 1135385DA FR 1135385 A FR1135385 A FR 1135385A
Authority
FR
France
Prior art keywords
listening device
listening
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)
Inventor
Thomas Steiner
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 filed Critical
Application granted granted Critical
Publication of FR1135385A publication Critical patent/FR1135385A/en
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
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR1135385D 1954-07-19 1955-07-19 Listening device Expired FR1135385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1135385X 1954-07-19

Publications (1)

Publication Number Publication Date
FR1135385A true FR1135385A (en) 1957-04-26

Family

ID=7725966

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1135385D Expired FR1135385A (en) 1954-07-19 1955-07-19 Listening device

Country Status (1)

Country Link
FR (1) FR1135385A (en)

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