JPS649010U - - Google Patents

Info

Publication number

JPS649010U

JPS649010U JP10282487U JP10282487U JPS649010U JP S649010 U JPS649010 U JP S649010U JP 10282487 U JP10282487 U JP 10282487U JP 10282487 U JP10282487 U JP 10282487U JP S649010 U JPS649010 U JP S649010U

Authority

JP

Japan

Prior art keywords

drill

counterboring

center

base metal

blades

Prior art date

1987-07-02

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

• 239000010953 base metal Substances 0.000 claims description 3
• 230000037431 insertion Effects 0.000 claims description 2
• 238000003780 insertion Methods 0.000 claims description 2
• 238000010586 diagram Methods 0.000 description 2
• 238000005498 polishing Methods 0.000 description 2