Title:
【考案の名称】ビレツト端面の穴明け装置
Document Type and Number:
Japanese Patent JPS605946
Kind Code:
Y2
Inventors:
Shinji Akita
Masayuki Hatanaka
Masayuki Hatanaka
Application Number:
JP11672680U
Publication Date:
February 25, 1985
Filing Date:
August 20, 1980
Export Citation:
Assignee:
Nippon Steel Tube Co., Ltd.
International Classes:
B21B19/04; B21J5/10; (IPC1-7): B21J5/10; B21B19/04
Attorney, Agent or Firm:
Masatoshi Sato
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