JPH01113489U - - Google Patents

Info

Publication number
JPH01113489U
JPH01113489U JP10730088U JP10730088U JPH01113489U JP H01113489 U JPH01113489 U JP H01113489U JP 10730088 U JP10730088 U JP 10730088U JP 10730088 U JP10730088 U JP 10730088U JP H01113489 U JPH01113489 U JP H01113489U
Authority
JP
Japan
Prior art keywords
duct
casing
acoustic transducer
opening
sound pressure
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
JP10730088U
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 JP10730088U priority Critical patent/JPH01113489U/ja
Publication of JPH01113489U publication Critical patent/JPH01113489U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Headphones And Earphones (AREA)
JP10730088U 1988-08-13 1988-08-13 Pending JPH01113489U (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10730088U JPH01113489U (en]) 1988-08-13 1988-08-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10730088U JPH01113489U (en]) 1988-08-13 1988-08-13

Publications (1)

Publication Number Publication Date
JPH01113489U true JPH01113489U (en]) 1989-07-31

Family

ID=31341588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10730088U Pending JPH01113489U (en]) 1988-08-13 1988-08-13

Country Status (1)

Country Link
JP (1) JPH01113489U (en])

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508604U (en]) * 1973-05-22 1975-01-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508604U (en]) * 1973-05-22 1975-01-29

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