Core material composition, mold core, and process for making mold cores
United States Patent 2487207

Inventors:
Adams, Edward S.
Publication Date:
11/08/1949
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Assignee:
Adams, Edward S.
Primary Class:
523/145
Other Classes:
106/38.350, 71/903, 524/445, 524/270
International Classes:
B22C1/02; B22C1/04; B22C1/00
US Patent References:
2401760Method of making molds
2431884Method of expanding pearlite
Foreign References:
GB303858A