JPS62131243U - - Google Patents

Info

Publication number

JPS62131243U

JPS62131243U JP1687786U JP1687786U JPS62131243U JP S62131243 U JPS62131243 U JP S62131243U JP 1687786 U JP1687786 U JP 1687786U JP 1687786 U JP1687786 U JP 1687786U JP S62131243 U JPS62131243 U JP S62131243U

Authority

JP

Japan

Prior art keywords

silencer

reinforcing member

expansion part

manhole

sound absorbing

Prior art date

1986-02-10

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

Links

• Espacenet
• Global Dossier
• Discuss

• 230000003584 silencer Effects 0.000 claims description 4
• 230000003014 reinforcing effect Effects 0.000 claims 2
• 239000011491 glass wool Substances 0.000 description 1
• 230000002787 reinforcement Effects 0.000 description 1

Cited By (1)