Title:
ELIMINATING PATTERNS FROM AND HARDENING OF SHELL MOLDS
Document Type and Number:
United States Patent 3519057
Inventors:
Benson, Charles L.
Lenahan, William N.
Publication Date:
07/07/1970
International Classes:
B22C9/04; B22C9/12; B22C9/00; B22C9/04
US Patent References:
| 2930089 | Precision casting | | | |
| 3348605 | Method and apparatus for forming cast objects using expendable patterns | | | |