FR636213A - - Google Patents

Info

Publication number
FR636213A
FR636213A FR636213DA FR636213A FR 636213 A FR636213 A FR 636213A FR 636213D A FR636213D A FR 636213DA FR 636213 A FR636213 A FR 636213A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR636213A publication Critical patent/FR636213A/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H04R5/023—Spatial or constructional arrangements of loudspeakers in a chair, pillow

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR636213D Expired FR636213A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
FR636213A true FR636213A (enrdf_load_stackoverflow) 1928-04-04

Family

ID=1542109

Family Applications (1)

Application Number Title Priority Date Filing Date
FR636213D Expired FR636213A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
FR (1) FR636213A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447470A (en) * 1943-12-17 1948-08-17 Oxzyn Company Noise insulating ring for earphones
FR2538204A1 (fr) * 1982-12-20 1984-06-22 Decrozant Jacques Moufle ecouteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447470A (en) * 1943-12-17 1948-08-17 Oxzyn Company Noise insulating ring for earphones
FR2538204A1 (fr) * 1982-12-20 1984-06-22 Decrozant Jacques Moufle ecouteur

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