JPH0418900U - - Google Patents

Info

Publication number
JPH0418900U
JPH0418900U JP5855390U JP5855390U JPH0418900U JP H0418900 U JPH0418900 U JP H0418900U JP 5855390 U JP5855390 U JP 5855390U JP 5855390 U JP5855390 U JP 5855390U JP H0418900 U JPH0418900 U JP H0418900U
Authority
JP
Japan
Prior art keywords
head
user
secondary sound
microphone
speaker
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.)
Pending
Application number
JP5855390U
Other languages
English (en)
Japanese (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 JP5855390U priority Critical patent/JPH0418900U/ja
Publication of JPH0418900U publication Critical patent/JPH0418900U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
JP5855390U 1990-06-01 1990-06-01 Pending JPH0418900U (enExample)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5855390U JPH0418900U (enExample) 1990-06-01 1990-06-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5855390U JPH0418900U (enExample) 1990-06-01 1990-06-01

Publications (1)

Publication Number Publication Date
JPH0418900U true JPH0418900U (enExample) 1992-02-17

Family

ID=31584270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5855390U Pending JPH0418900U (enExample) 1990-06-01 1990-06-01

Country Status (1)

Country Link
JP (1) JPH0418900U (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009029405A (ja) * 2007-06-22 2009-02-12 Panasonic Corp 騒音制御装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009029405A (ja) * 2007-06-22 2009-02-12 Panasonic Corp 騒音制御装置

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