BE562437A - - Google Patents

Info

Publication number
BE562437A
BE562437A BE562437DA BE562437A BE 562437 A BE562437 A BE 562437A BE 562437D A BE562437D A BE 562437DA BE 562437 A BE562437 A BE 562437A
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.)
Publication of BE562437A publication Critical patent/BE562437A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE562437D 1956-12-27 BE562437A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US630829A US2908773A (en) 1956-12-27 1956-12-27 Electroacoustic transducer

Publications (1)

Publication Number Publication Date
BE562437A true BE562437A (fr)

Family

ID=24528715

Family Applications (1)

Application Number Title Priority Date Filing Date
BE562437D BE562437A (fr) 1956-12-27

Country Status (2)

Country Link
US (1) US2908773A (fr)
BE (1) BE562437A (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1034200A (en) * 1910-10-24 1912-07-30 Louis W Carroll Telephone-receiver.
US1569411A (en) * 1922-04-18 1926-01-12 Westinghouse Electric & Mfg Co Dynamic transmitter
US2493734A (en) * 1945-05-23 1950-01-03 Sonotone Corp Magnetic insert earphone insertable in the ear of the user
US2567365A (en) * 1948-08-04 1951-09-11 Bell Telephone Labor Inc Polarized operator for telephone receivers
US2794862A (en) * 1952-07-03 1957-06-04 American Danish Oticon Corp Electro-acoustic apparatus
US2820107A (en) * 1954-12-22 1958-01-14 Sonotonc Corp Electro-mechanical signal transducers

Also Published As

Publication number Publication date
US2908773A (en) 1959-10-13

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