GB973479A - Improvements in hearing aids - Google Patents

Improvements in hearing aids

Info

Publication number
GB973479A
GB973479A GB646663A GB646663A GB973479A GB 973479 A GB973479 A GB 973479A GB 646663 A GB646663 A GB 646663A GB 646663 A GB646663 A GB 646663A GB 973479 A GB973479 A GB 973479A
Authority
GB
United Kingdom
Prior art keywords
constriction
case
hearing aids
tube
feb
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
GB646663A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB973479A publication Critical patent/GB973479A/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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/48—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using constructional means for obtaining a desired frequency response

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
GB646663A 1962-02-21 1963-02-18 Improvements in hearing aids Expired GB973479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL275093 1962-02-21

Publications (1)

Publication Number Publication Date
GB973479A true GB973479A (en) 1964-10-28

Family

ID=19753629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB646663A Expired GB973479A (en) 1962-02-21 1963-02-18 Improvements in hearing aids

Country Status (3)

Country Link
DE (1) DE1884933U (enrdf_load_stackoverflow)
GB (1) GB973479A (enrdf_load_stackoverflow)
NL (1) NL275093A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296829A (en) * 1978-12-15 1981-10-27 Danavox A/S Hook-shaped part of a behind-the-ear hearing aid
FR2490485A1 (fr) * 1980-09-22 1982-03-26 Michas Frederic Prothese auditive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296829A (en) * 1978-12-15 1981-10-27 Danavox A/S Hook-shaped part of a behind-the-ear hearing aid
FR2490485A1 (fr) * 1980-09-22 1982-03-26 Michas Frederic Prothese auditive

Also Published As

Publication number Publication date
NL275093A (enrdf_load_stackoverflow)
DE1884933U (de) 1963-12-27

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