FR694079A - Dispositifs acoustiques - Google Patents

Dispositifs acoustiques

Info

Publication number
FR694079A
FR694079A FR694079DA FR694079A FR 694079 A FR694079 A FR 694079A FR 694079D A FR694079D A FR 694079DA FR 694079 A FR694079 A FR 694079A
Authority
FR
France
Prior art keywords
acoustic devices
acoustic
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
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products 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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR694079A publication Critical patent/FR694079A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR694079D 1929-04-20 1930-04-17 Dispositifs acoustiques Expired FR694079A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US694079XA 1929-04-20 1929-04-20

Publications (1)

Publication Number Publication Date
FR694079A true FR694079A (fr) 1930-11-28

Family

ID=22088783

Family Applications (1)

Application Number Title Priority Date Filing Date
FR694079D Expired FR694079A (fr) 1929-04-20 1930-04-17 Dispositifs acoustiques

Country Status (1)

Country Link
FR (1) FR694079A (fr)

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