Title:
【考案の名称】さく岩機のセントラライザ-
Document Type and Number:
Japanese Patent JPS5817984
Kind Code:
U
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Inventors:
Amano Yoshiaki
Application Number:
JP10948181U
Publication Date:
February 03, 1983
Filing Date:
July 23, 1981
Export Citation:
International Classes:
E21B17/10; B25D17/28; E21B19/24; (IPC1-7): B25D17/28; E21B17/10