Title:
【考案の名称】掘削機
Document Type and Number:
Japanese Patent JPH0647992
Kind Code:
Y2
Inventors:
Nakai Sakae
Masataka Uozumi
Tatsuo Ito
Kohei Takagi
Masataka Uozumi
Tatsuo Ito
Kohei Takagi
Application Number:
JP2178790U
Publication Date:
December 07, 1994
Filing Date:
March 06, 1990
Export Citation:
Assignee:
Mitsui Construction Co., Ltd.
Mitsui Shipbuilding Co., Ltd.
Mitsui Shipbuilding Co., Ltd.
International Classes:
E21B1/36; E21B1/00; (IPC1-7): E21C3/02
Attorney, Agent or Firm:
Kinichi Kitamura (3 others)
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