Title:
EXCAVATING DEVICE
Document Type and Number:
Japanese Patent JPS52131902
Kind Code:
A
Abstract:
A rock drill assembly and more particularly a rock drill assembly having improved fluid power means therefor.
Inventors:
WAADO DEE MORIRIN
Application Number:
JP3232077A
Publication Date:
November 05, 1977
Filing Date:
March 25, 1977
Export Citation:
Assignee:
JOY MFG CO
International Classes:
B25D9/12; E21B19/08; E21B6/00; E21B44/06; (IPC1-7): E21C5/00
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