Title:
ELIMINATING PATTERNS FROM AND HARDENING OF SHELL MOLDS
Document Type and Number:
United States Patent 3519057


Inventors:
Benson, Charles L.
Lenahan, William N.
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Publication Date:
07/07/1970
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Assignee:
HOWMET CORP
Primary Class:
International Classes:
B22C9/04; B22C9/12; B22C9/00; B22C9/04
US Patent References:
2930089Precision casting
3348605Method and apparatus for forming cast objects using expendable patterns
Foreign References:
GB716394A




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