Title:
EXPENDABLE PATTERN FOR PRECISION INVESTMENT CASTING
United States Patent 3426834
Inventors:
Jacobs, Louis J.
Klaudinyi, Bela
Fisher, Robert Earl
Publication Date:
02/11/1969
Assignee:
OBERMAYER CO THE S
Other Classes:
164/34, 164/246, 164/517, 164/45
International Classes:
B22C1/16; B22C7/02; B22C7/00; B22C7/00; B22C1/22; B22C9/12
US Patent References:
| 3339620 | Cavityless casting pattern and method of making same | | | |