BE432189A - - Google Patents

Info

Publication number
BE432189A
BE432189A BE432189DA BE432189A BE 432189 A BE432189 A BE 432189A BE 432189D A BE432189D A BE 432189DA BE 432189 A BE432189 A BE 432189A
Authority
BE
Belgium
Application number
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
Publication of BE432189A publication Critical patent/BE432189A/xx

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
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
BE432189D 1935-08-31 1939-01-16 BE432189A (US06312121-20011106-C00033.png)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US38682A US2144458A (en) 1935-08-31 1935-08-31 Bone conduction audiphone
BE432189T 1939-01-16
FR849003T 1939-01-17

Publications (1)

Publication Number Publication Date
BE432189A true BE432189A (US06312121-20011106-C00033.png) 1939-02-28

Family

ID=42104673

Family Applications (1)

Application Number Title Priority Date Filing Date
BE432189D BE432189A (US06312121-20011106-C00033.png) 1935-08-31 1939-01-16

Country Status (3)

Country Link
US (2) US2144458A (US06312121-20011106-C00033.png)
BE (1) BE432189A (US06312121-20011106-C00033.png)
FR (1) FR849003A (US06312121-20011106-C00033.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE468886A (US06312121-20011106-C00033.png) * 1941-11-28
US2459325A (en) * 1944-10-27 1949-01-18 Zenith Radio Corp Bone conduction unit
US2681389A (en) * 1949-02-25 1954-06-15 Dyna Labs Inc Bone conduction hearing aid unit
US2678973A (en) * 1950-10-02 1954-05-18 Charles E Glassen Mounting for hearing aid receivers
US3423544A (en) * 1965-09-13 1969-01-21 Beltone Electronics Corp Electroacoustic bone conduction receiver

Also Published As

Publication number Publication date
FR849003A (fr) 1939-11-13
USRE22658E (en) 1945-08-07
US2144458A (en) 1939-01-17

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