JPS6244987U - - Google Patents

Info

Publication number

JPS6244987U

JPS6244987U JP13634485U JP13634485U JPS6244987U JP S6244987 U JPS6244987 U JP S6244987U JP 13634485 U JP13634485 U JP 13634485U JP 13634485 U JP13634485 U JP 13634485U JP S6244987 U JPS6244987 U JP S6244987U

Authority

JP

Japan

Prior art keywords

underdrain

end surface

concrete block

engagement part

joint end

Prior art date

1985-09-05

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.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss