JPS6391635U - - Google Patents

Info

Publication number

JPS6391635U

JPS6391635U JP18811086U JP18811086U JPS6391635U JP S6391635 U JPS6391635 U JP S6391635U JP 18811086 U JP18811086 U JP 18811086U JP 18811086 U JP18811086 U JP 18811086U JP S6391635 U JPS6391635 U JP S6391635U

Authority

JP

Japan

Prior art keywords

core material

lightweight core

reinforcing

treadboard

stairs

Prior art date

1986-12-05

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.)

Granted

Links

• Espacenet
• Global Dossier
• Discuss

• 239000011162 core material Substances 0.000 claims description 4
• 239000011120 plywood Substances 0.000 claims description 2
• 239000012779 reinforcing material Substances 0.000 claims 2
• 239000000463 material Substances 0.000 description 1
• 230000002787 reinforcement Effects 0.000 description 1

Cited By (2)