FR675338A - Acoustic device - Google Patents

Acoustic device

Info

Publication number
FR675338A
FR675338A FR675338DA FR675338A FR 675338 A FR675338 A FR 675338A FR 675338D A FR675338D A FR 675338DA FR 675338 A FR675338 A FR 675338A
Authority
FR
France
Prior art keywords
acoustic device
acoustic
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
Charles Fensky
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 FR675338A publication Critical patent/FR675338A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/30—Non-electric hearing aids, e.g. ear trumpets, sound amplifiers or ear-shells

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Headphones And Earphones (AREA)
  • Percussion Or Vibration Massage (AREA)
FR675338D 1928-05-19 1929-05-17 Acoustic device Expired FR675338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US278961A US1824427A (en) 1928-05-19 1928-05-19 Hearing device

Publications (1)

Publication Number Publication Date
FR675338A true FR675338A (en) 1930-02-08

Family

ID=10044585

Family Applications (1)

Application Number Title Priority Date Filing Date
FR675338D Expired FR675338A (en) 1928-05-19 1929-05-17 Acoustic device

Country Status (4)

Country Link
US (1) US1824427A (en)
DE (1) DE513878C (en)
FR (1) FR675338A (en)
GB (1) GB331044A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738850A (en) * 1951-08-30 1956-03-20 Kenneth O Tooker Artificial hearing aid
US3451502A (en) * 1968-04-03 1969-06-24 Jack P Branch Tone frequency noise filter
US4556122A (en) * 1981-08-31 1985-12-03 Innovative Hearing Corporation Ear acoustical hearing aid
USD783003S1 (en) * 2013-02-07 2017-04-04 Decibullz Llc Moldable earpiece
USD732510S1 (en) * 2014-06-20 2015-06-23 T.REX Holdings, LLC In-ear headphone
USD732511S1 (en) * 2014-06-20 2015-06-23 T.REX Holdings, LLC In-ear headphone pair in joined charging configuration
US9516401B2 (en) 2014-07-10 2016-12-06 T.REX Holdings, LLC Wireless in-ear headphones
TWD176082S (en) * 2014-12-29 2016-06-01 三星電子股份有限公司 Portion of cap for earphone
USD781268S1 (en) * 2015-12-24 2017-03-14 Intel Corporation Earpiece device
USD850418S1 (en) * 2017-11-10 2019-06-04 Changjian Su Wireless earphone

Also Published As

Publication number Publication date
DE513878C (en) 1930-12-04
GB331044A (en) 1930-06-26
US1824427A (en) 1931-09-22

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