Title:
MOUTH APPARATUS FOR PRESSURE DRILLING
Document Type and Number:
Japanese Patent JPS5417301
Kind Code:
A
Inventors:
MOCHIDA YUTAKA
KATSURAGI SADAO
OOSHIKA HARUO
SHINJIYOU JIYUN
KATSURAGI SADAO
OOSHIKA HARUO
SHINJIYOU JIYUN
Application Number:
JP8233177A
Publication Date:
February 08, 1979
Filing Date:
July 09, 1977
Export Citation:
Assignee:
MOCHIDA YUTAKA
KATSURAGI SADAO
KOKEN BORING MACHINE CO
KATSURAGI SADAO
KOKEN BORING MACHINE CO
International Classes:
E21B33/02; (IPC1-7): E21B33/02