Title:
【考案の名称】坑内用大形さく岩機
Document Type and Number:
Japanese Patent JPS5910237
Kind Code:
Y2
Inventors:
Yoshikazu Mikami
Application Number:
JP7339776U
Publication Date:
March 30, 1984
Filing Date:
June 07, 1976
Export Citation:
Assignee:
Furukawa Mining Co., Ltd.
International Classes:
E21B1/00; (IPC1-7): E21C3/00
Attorney, Agent or Firm:
Tetsuya Mori