JPS6422942U - - Google Patents

Info

Publication number
JPS6422942U
JPS6422942U JP11774487U JP11774487U JPS6422942U JP S6422942 U JPS6422942 U JP S6422942U JP 11774487 U JP11774487 U JP 11774487U JP 11774487 U JP11774487 U JP 11774487U JP S6422942 U JPS6422942 U JP S6422942U
Authority
JP
Japan
Prior art keywords
ventilation opening
hollow cylindrical
shielding wall
ventilation
opening device
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
JP11774487U
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 JP11774487U priority Critical patent/JPS6422942U/ja
Publication of JPS6422942U publication Critical patent/JPS6422942U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Duct Arrangements (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
JP11774487U 1987-07-31 1987-07-31 Pending JPS6422942U (US07714131-20100511-C00038.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11774487U JPS6422942U (US07714131-20100511-C00038.png) 1987-07-31 1987-07-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11774487U JPS6422942U (US07714131-20100511-C00038.png) 1987-07-31 1987-07-31

Publications (1)

Publication Number Publication Date
JPS6422942U true JPS6422942U (US07714131-20100511-C00038.png) 1989-02-07

Family

ID=31361470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11774487U Pending JPS6422942U (US07714131-20100511-C00038.png) 1987-07-31 1987-07-31

Country Status (1)

Country Link
JP (1) JPS6422942U (US07714131-20100511-C00038.png)

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