FR366507A - Restraint device for telephone receivers - Google Patents

Restraint device for telephone receivers

Info

Publication number
FR366507A
FR366507A FR366507DA FR366507A FR 366507 A FR366507 A FR 366507A FR 366507D A FR366507D A FR 366507DA FR 366507 A FR366507 A FR 366507A
Authority
FR
France
Prior art keywords
restraint device
telephone receivers
receivers
telephone
restraint
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
Wilhelm Balassa
Bela Balassa
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR366507A publication Critical patent/FR366507A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR366507D 1906-05-22 1906-05-22 Restraint device for telephone receivers Expired FR366507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR366507T 1906-05-22

Publications (1)

Publication Number Publication Date
FR366507A true FR366507A (en) 1906-10-05

Family

ID=1413721

Family Applications (1)

Application Number Title Priority Date Filing Date
FR366507D Expired FR366507A (en) 1906-05-22 1906-05-22 Restraint device for telephone receivers

Country Status (1)

Country Link
FR (1) FR366507A (en)

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