B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/164, 6/45
B22C 1/00 (2006.01) B22C 1/16 (2006.01)
Patent
CA 1147506
Abstract A ceramic shell mold having the properties of being easily removed from the metal castings, high permeability, and a fired strength that can be controlled at levels lower than conventional molds characterized in that the refractory used to make the mold is at least in part hydrated alumina.
357671
Precision Metalsmiths Inc.
Ridout & Maybee Llp
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