JPH0139033Y2 - - Google Patents

Info

Publication number
JPH0139033Y2
JPH0139033Y2 JP7605083U JP7605083U JPH0139033Y2 JP H0139033 Y2 JPH0139033 Y2 JP H0139033Y2 JP 7605083 U JP7605083 U JP 7605083U JP 7605083 U JP7605083 U JP 7605083U JP H0139033 Y2 JPH0139033 Y2 JP H0139033Y2
Authority
JP
Japan
Prior art keywords
helmet
sound
sounds
microphone
hear
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
JP7605083U
Other languages
English (en)
Japanese (ja)
Other versions
JPS59183082U (ja
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
Priority to JP7605083U priority Critical patent/JPS59183082U/ja
Publication of JPS59183082U publication Critical patent/JPS59183082U/ja
Application granted granted Critical
Publication of JPH0139033Y2 publication Critical patent/JPH0139033Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Helmets And Other Head Coverings (AREA)
  • Headphones And Earphones (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
JP7605083U 1983-05-23 1983-05-23 ヘルメツト用音響装置 Granted JPS59183082U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7605083U JPS59183082U (ja) 1983-05-23 1983-05-23 ヘルメツト用音響装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7605083U JPS59183082U (ja) 1983-05-23 1983-05-23 ヘルメツト用音響装置

Publications (2)

Publication Number Publication Date
JPS59183082U JPS59183082U (ja) 1984-12-06
JPH0139033Y2 true JPH0139033Y2 (OSRAM) 1989-11-21

Family

ID=30206102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7605083U Granted JPS59183082U (ja) 1983-05-23 1983-05-23 ヘルメツト用音響装置

Country Status (1)

Country Link
JP (1) JPS59183082U (OSRAM)

Also Published As

Publication number Publication date
JPS59183082U (ja) 1984-12-06

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