Title:
ドリル螺旋角構造
Document Type and Number:
Japanese Patent JP3146992
Kind Code:
U
Inventors:
Lu Jiekei
Application Number:
JP2008006791U
Publication Date:
December 11, 2008
Filing Date:
September 29, 2008
Export Citation:
Assignee:
Sharp Technology Co., Ltd.
International Classes:
B23B51/00
Attorney, Agent or Firm:
Patent business corporation Ota patent office