JPS62147415U - - Google Patents

Info

Publication number

JPS62147415U

JPS62147415U JP3636686U JP3636686U JPS62147415U JP S62147415 U JPS62147415 U JP S62147415U JP 3636686 U JP3636686 U JP 3636686U JP 3636686 U JP3636686 U JP 3636686U JP S62147415 U JPS62147415 U JP S62147415U

Authority

JP

Japan

Prior art keywords

root

same

tip

groove

twisted groove

Prior art date

1986-03-11

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

• 238000013459 approach Methods 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 1
• 238000000034 method Methods 0.000 description 1

Cited By (2)