FR616677A - Device allowing two-ear telephone hearing - Google Patents

Device allowing two-ear telephone hearing

Info

Publication number
FR616677A
FR616677A FR616677DA FR616677A FR 616677 A FR616677 A FR 616677A FR 616677D A FR616677D A FR 616677DA FR 616677 A FR616677 A FR 616677A
Authority
FR
France
Prior art keywords
device allowing
ear telephone
telephone hearing
hearing
ear
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)
Inventor
Jean Maire
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 filed Critical
Application granted granted Critical
Publication of FR616677A publication Critical patent/FR616677A/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
    • H04R5/00—Stereophonic arrangements
    • H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR616677D 1926-05-26 1926-05-26 Device allowing two-ear telephone hearing Expired FR616677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR616677T 1926-05-26

Publications (1)

Publication Number Publication Date
FR616677A true FR616677A (en) 1927-02-05

Family

ID=8981762

Family Applications (1)

Application Number Title Priority Date Filing Date
FR616677D Expired FR616677A (en) 1926-05-26 1926-05-26 Device allowing two-ear telephone hearing

Country Status (1)

Country Link
FR (1) FR616677A (en)

Similar Documents

Publication Publication Date Title
FR698774A (en) Alarm device
FR32649E (en) Electro-dynamic device that can be used as microphone or speaker
FR604441A (en) Device intended to facilitate hearing
FR616677A (en) Device allowing two-ear telephone hearing
FR640950A (en) Fire alarm device
FR711544A (en) Advanced device for the penis
SU4488A1 (en) Telephone device
FR609413A (en) Clutch device
FR621195A (en) Silent phone device
FR676284A (en) Blocking device for sewer lines
FR615108A (en) Ear plow with device for excavating the basement
FR639302A (en) Speaker device
FR619437A (en) Fully removable etripene device
FR34351E (en) Electromagnetic device for earpiece, speaker or diffuser
FR572883A (en) Hygienic protective device for telephone devices
FR608120A (en) Coupling device
FR699527A (en) Device for disinfecting microphones and telephone headphones
FR622274A (en) Crankshaft device
FR638613A (en) Stop device
FR610825A (en) Coupling device
FR652294A (en) Pipe coupling device
FR652479A (en) Electricity bell ringing device
FR618447A (en) Trouser extender device
FR603244A (en) Plaster device
FR584688A (en) Portable amplifier device for telephone receivers