Apparatus and method for treating foundry sand
United States Patent 2478461
Inventors:
Connolly, George E.
Publication Date:
08/09/1949
Assignee:
NICHOLS ENGINEERING & RES CORP
Other Classes:
134/2, 451/447, 241/DIG.010, 164/5
International Classes:
B22C5/08; B22C5/00
US Patent References:
| 2326218 | Process of reclaiming foundry sand | | | |