JPS643269Y2 - - Google Patents

Info

Publication number
JPS643269Y2
JPS643269Y2 JP4217882U JP4217882U JPS643269Y2 JP S643269 Y2 JPS643269 Y2 JP S643269Y2 JP 4217882 U JP4217882 U JP 4217882U JP 4217882 U JP4217882 U JP 4217882U JP S643269 Y2 JPS643269 Y2 JP S643269Y2
Authority
JP
Japan
Prior art keywords
helmet
microphone
present
full
center line
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
JP4217882U
Other languages
English (en)
Japanese (ja)
Other versions
JPS58144986U (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 JP4217882U priority Critical patent/JPS58144986U/ja
Priority to US06/477,926 priority patent/US4517417A/en
Publication of JPS58144986U publication Critical patent/JPS58144986U/ja
Application granted granted Critical
Publication of JPS643269Y2 publication Critical patent/JPS643269Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Helmets And Other Head Coverings (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
JP4217882U 1982-03-25 1982-03-25 ヘルメツト用マイクロフオン Granted JPS58144986U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4217882U JPS58144986U (ja) 1982-03-25 1982-03-25 ヘルメツト用マイクロフオン
US06/477,926 US4517417A (en) 1982-03-25 1983-03-23 Communication system for a motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4217882U JPS58144986U (ja) 1982-03-25 1982-03-25 ヘルメツト用マイクロフオン

Publications (2)

Publication Number Publication Date
JPS58144986U JPS58144986U (ja) 1983-09-29
JPS643269Y2 true JPS643269Y2 (enrdf_load_stackoverflow) 1989-01-27

Family

ID=30053318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4217882U Granted JPS58144986U (ja) 1982-03-25 1982-03-25 ヘルメツト用マイクロフオン

Country Status (1)

Country Link
JP (1) JPS58144986U (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001119798A (ja) * 1999-10-15 2001-04-27 Kenwood Corp 通信用ヘルメット
GB0609416D0 (en) * 2006-05-12 2006-06-21 Audiogravity Holdings Ltd Wind noise rejection apparatus

Also Published As

Publication number Publication date
JPS58144986U (ja) 1983-09-29

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