Title:
HOSE GUIDE FOR ROCK DRILLS
United States Patent 3508619
US Patent References:
Motor operated drill
- - 2730332
Mine drilling machine
- - 2958514
Drilling device
- - 3162253
Face drilling machine
- - 3205951
Motor operated drill
- - 2730332
Mine drilling machine
- - 2958514
Drilling device
- - 3162253
Face drilling machine
- - 3205951
Inventors:
Huffman, Mervin C.
Publication Date:
04/28/1970
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Export Citation:
Assignee:
GARDNER DENVER CO
Primary Class:
Other Classes:
173/160
International Classes:
E21B7/02; E21B19/084; E21B19/00; B23Q5/00