JPH02133099U - - Google Patents

Info

Publication number
JPH02133099U
JPH02133099U JP4156389U JP4156389U JPH02133099U JP H02133099 U JPH02133099 U JP H02133099U JP 4156389 U JP4156389 U JP 4156389U JP 4156389 U JP4156389 U JP 4156389U JP H02133099 U JPH02133099 U JP H02133099U
Authority
JP
Japan
Prior art keywords
megaphone
trumpet
utility
open
outside
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
JP4156389U
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 JP4156389U priority Critical patent/JPH02133099U/ja
Publication of JPH02133099U publication Critical patent/JPH02133099U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Sewage (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
JP4156389U 1989-04-06 1989-04-06 Pending JPH02133099U (US20030204162A1-20031030-M00001.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4156389U JPH02133099U (US20030204162A1-20031030-M00001.png) 1989-04-06 1989-04-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4156389U JPH02133099U (US20030204162A1-20031030-M00001.png) 1989-04-06 1989-04-06

Publications (1)

Publication Number Publication Date
JPH02133099U true JPH02133099U (US20030204162A1-20031030-M00001.png) 1990-11-05

Family

ID=31552334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4156389U Pending JPH02133099U (US20030204162A1-20031030-M00001.png) 1989-04-06 1989-04-06

Country Status (1)

Country Link
JP (1) JPH02133099U (US20030204162A1-20031030-M00001.png)

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