JPS63116829U - - Google Patents

Info

Publication number

JPS63116829U

JPS63116829U JP875687U JP875687U JPS63116829U JP S63116829 U JPS63116829 U JP S63116829U JP 875687 U JP875687 U JP 875687U JP 875687 U JP875687 U JP 875687U JP S63116829 U JPS63116829 U JP S63116829U

Authority

JP

Japan

Prior art keywords

draining

holes

ventilation

tapers

ribs

Prior art date

1987-01-26

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

• 238000009423 ventilation Methods 0.000 claims description 6
• 230000037431 insertion Effects 0.000 claims description 3
• 238000003780 insertion Methods 0.000 claims description 3
• 239000000463 material Substances 0.000 description 1
• 239000004570 mortar (masonry) Substances 0.000 description 1