FR795076A - Device for listening by conduction of bones - Google Patents

Device for listening by conduction of bones

Info

Publication number
FR795076A
FR795076A FR795076DA FR795076A FR 795076 A FR795076 A FR 795076A FR 795076D A FR795076D A FR 795076DA FR 795076 A FR795076 A FR 795076A
Authority
FR
France
Prior art keywords
bones
listening
conduction
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.)
DICTOGRAPH PRODUCTS CO Inc
Original Assignee
DICTOGRAPH PRODUCTS CO Inc
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 DICTOGRAPH PRODUCTS CO Inc filed Critical DICTOGRAPH PRODUCTS CO Inc
Application granted granted Critical
Publication of FR795076A publication Critical patent/FR795076A/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
    • 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)
  • Battery Mounting, Suspending (AREA)
  • Headphones And Earphones (AREA)
FR795076D 1934-09-22 1935-09-17 Device for listening by conduction of bones Expired FR795076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US443692XA 1934-09-22 1934-09-22

Publications (1)

Publication Number Publication Date
FR795076A true FR795076A (en) 1936-03-03

Family

ID=21932001

Family Applications (1)

Application Number Title Priority Date Filing Date
FR795076D Expired FR795076A (en) 1934-09-22 1935-09-17 Device for listening by conduction of bones

Country Status (4)

Country Link
BE (1) BE411317A (en)
FR (1) FR795076A (en)
GB (1) GB443692A (en)
NL (1) NL42562C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10469935B2 (en) * 2012-12-28 2019-11-05 Panasonic Intellectual Property Management Co., Ltd. Bone conduction speaker and bone conduction headphone device

Also Published As

Publication number Publication date
GB443692A (en) 1936-03-04
NL42562C (en)
BE411317A (en)

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