JPH01180547U - - Google Patents

Info

Publication number

JPH01180547U

JPH01180547U JP7488588U JP7488588U JPH01180547U JP H01180547 U JPH01180547 U JP H01180547U JP 7488588 U JP7488588 U JP 7488588U JP 7488588 U JP7488588 U JP 7488588U JP H01180547 U JPH01180547 U JP H01180547U

Authority

JP

Japan

Prior art keywords

receiving frame

manhole iron

outer peripheral

utility

peripheral edge

Prior art date

1988-06-06

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

• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
• 229910052742 iron Inorganic materials 0.000 claims description 4
• 230000002093 peripheral effect Effects 0.000 claims 1
• 125000006850 spacer group Chemical group 0.000 description 1