GB710388A - - Google Patents

Info

Publication number
GB710388A
GB710388A GB710388DA GB710388A GB 710388 A GB710388 A GB 710388A GB 710388D A GB710388D A GB 710388DA GB 710388 A GB710388 A GB 710388A
Authority
GB
United Kingdom
Prior art keywords
box
duct
chassis
microphone
sound
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.)
Active
Application number
Other languages
English (en)
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 GB710388A publication Critical patent/GB710388A/en
Active 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
    • H04R25/04—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception comprising pocket amplifiers

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)
  • Battery Mounting, Suspending (AREA)
GB710388D 1951-05-02 Active GB710388A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1062534X 1951-05-02

Publications (1)

Publication Number Publication Date
GB710388A true GB710388A (enrdf_load_stackoverflow)

Family

ID=19868146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB710388D Active GB710388A (enrdf_load_stackoverflow) 1951-05-02

Country Status (2)

Country Link
FR (1) FR1062534A (enrdf_load_stackoverflow)
GB (1) GB710388A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668334A (en) * 1970-05-07 1972-06-06 Radioear Corp Hearing aid with changeable battery cover containing rf pickup coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668334A (en) * 1970-05-07 1972-06-06 Radioear Corp Hearing aid with changeable battery cover containing rf pickup coil

Also Published As

Publication number Publication date
FR1062534A (fr) 1954-04-23

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