04174010 is referenced by 3 patents and cites 3 patents.

A percussive rock drill and more particularly a percussive rock drill having improved means for passing a flow of flushing fluid therethrough.

Title
Rock drill
Application Number
625540
Publication Number
4174010
Application Date
August 15, 1977
Publication Date
November 13, 1979
Inventor
George A Hibbard
Claremont
NH, US
Agent
J Stewart Brams
Assignee
Joy Manufacturing Company
PA, US
IPC
E21C 7/10
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