FR504161A - Improvements to diaphragms for gramophone or phonograph resonance boxes, for telephones, etc. - Google Patents

Improvements to diaphragms for gramophone or phonograph resonance boxes, for telephones, etc.

Info

Publication number
FR504161A
FR504161A FR504161A FR504161DA FR504161A FR 504161 A FR504161 A FR 504161A FR 504161 A FR504161 A FR 504161A FR 504161D A FR504161D A FR 504161DA FR 504161 A FR504161 A FR 504161A
Authority
FR
France
Prior art keywords
gramophone
phonograph
diaphragms
telephones
resonance boxes
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
FR504161A
Other languages
French (fr)
Inventor
Arthur Thomas Collier
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 FR504161A publication Critical patent/FR504161A/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
    • H04R7/16—Mounting or tensioning of diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR504161A 1918-09-28 1919-09-23 Improvements to diaphragms for gramophone or phonograph resonance boxes, for telephones, etc. Expired FR504161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB504161X 1918-09-28

Publications (1)

Publication Number Publication Date
FR504161A true FR504161A (en) 1920-06-26

Family

ID=10270123

Family Applications (1)

Application Number Title Priority Date Filing Date
FR504161A Expired FR504161A (en) 1918-09-28 1919-09-23 Improvements to diaphragms for gramophone or phonograph resonance boxes, for telephones, etc.

Country Status (1)

Country Link
FR (1) FR504161A (en)

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