JPS6424192U - - Google Patents

Info

Publication number

JPS6424192U

JPS6424192U JP11642687U JP11642687U JPS6424192U JP S6424192 U JPS6424192 U JP S6424192U JP 11642687 U JP11642687 U JP 11642687U JP 11642687 U JP11642687 U JP 11642687U JP S6424192 U JPS6424192 U JP S6424192U

Authority

JP

Japan

Prior art keywords

casing

end surface

main body

excavating tooth

tip

Prior art date

1987-07-29

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

• 238000009412 basement excavation Methods 0.000 claims description 3
• 238000005553 drilling Methods 0.000 claims 1