Title:
【考案の名称】さく孔機の油圧駆動制御装置
Document Type and Number:
Japanese Patent JPS59160684
Kind Code:
U
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Inventors:
Yoshioka sequentially
Application Number:
JP3993683U
Publication Date:
October 27, 1984
Filing Date:
March 19, 1983
Export Citation:
International Classes:
E02F9/22; E02F9/20; E21B1/00; E21B1/26; F16H61/40; F16H61/448; G05G9/00; G05G13/00; (IPC1-7): E21C3/20; E02F9/20; F16H39/46; G05G9/00