FR639899A - Device to reproduce sounds - Google Patents

Device to reproduce sounds

Info

Publication number
FR639899A
FR639899A FR639899DA FR639899A FR 639899 A FR639899 A FR 639899A FR 639899D A FR639899D A FR 639899DA FR 639899 A FR639899 A FR 639899A
Authority
FR
France
Prior art keywords
reproduce sounds
sounds
reproduce
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)
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.)
REPRODUCING CORP
Original Assignee
REPRODUCING CORP
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 REPRODUCING CORP filed Critical REPRODUCING CORP
Application granted granted Critical
Publication of FR639899A publication Critical patent/FR639899A/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)
FR639899D 1927-08-22 1927-08-22 Device to reproduce sounds Expired FR639899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR639899T 1927-08-22

Publications (1)

Publication Number Publication Date
FR639899A true FR639899A (en) 1928-07-02

Family

ID=8997092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR639899D Expired FR639899A (en) 1927-08-22 1927-08-22 Device to reproduce sounds

Country Status (1)

Country Link
FR (1) FR639899A (en)

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