FR506371A - Improvements to diaphragms for speaking machines - Google Patents

Improvements to diaphragms for speaking machines

Info

Publication number
FR506371A
FR506371A FR506371A FR506371DA FR506371A FR 506371 A FR506371 A FR 506371A FR 506371 A FR506371 A FR 506371A FR 506371D A FR506371D A FR 506371DA FR 506371 A FR506371 A FR 506371A
Authority
FR
France
Prior art keywords
diaphragms
speaking machines
speaking
machines
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
FR506371A
Other languages
French (fr)
Inventor
Frank Victor Van De Myer
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 FR506371A publication Critical patent/FR506371A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR506371A 1918-06-20 1919-11-19 Improvements to diaphragms for speaking machines Expired FR506371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US506371XA 1918-06-20 1918-06-20

Publications (1)

Publication Number Publication Date
FR506371A true FR506371A (en) 1920-08-20

Family

ID=21966442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR506371A Expired FR506371A (en) 1918-06-20 1919-11-19 Improvements to diaphragms for speaking machines

Country Status (1)

Country Link
FR (1) FR506371A (en)

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