FR675338A - Acoustic device - Google Patents
Acoustic deviceInfo
- 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
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)
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)
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 |
-
1928
- 1928-05-19 US US278961A patent/US1824427A/en not_active Expired - Lifetime
-
1929
- 1929-05-10 GB GB14623/29A patent/GB331044A/en not_active Expired
- 1929-05-17 FR FR675338D patent/FR675338A/en not_active Expired
- 1929-05-19 DE DEF68421D patent/DE513878C/en not_active Expired
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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