Inventor
SCHAEFER CARL W D
4 patents
Patents
4 patentsUS5725043AMar 10, 1998
Low pressure casting process and apparatus
SCHAEFER FRANK W INC48 citations88
US4027862AJun 7, 1977
Metal melting furnace with alternate heating systems
SCHAEFER FRANK W INC27 citations78
US5590681AJan 7, 1997
Valve assembly
SCHAEFER FRANK W INC13 citations69
US3996412ADec 7, 1976
Aluminum melting furnace
SCHAEFER FRANK W INC19 citations69