Title:
FEED MECHANISM FOR ROCK DRILL HOSE GUIDE
United States Patent 3500941
US Patent References:
Motor operated drill
- - 2730332
Drilling device
- - 3162253
Face drilling machine
- - 3205951
Motor operated drill
- - 2730332
Drilling device
- - 3162253
Face drilling machine
- - 3205951
Inventors:
Rudman, Frederick R.
Publication Date:
03/17/1970
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Export Citation:
Assignee:
GARDNER DENVER CO
Primary Class:
Other Classes:
173/194
International Classes:
E21B15/04; E21B15/00; E21C5/06; E21C11/00