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5749409 Method of forming refractory coated foundry core  
Refractory coated gelatin-bonded foundry sand core made by waterproofing the surface of the core and immersing the waterproofed core in an aqueous refractory suspension to deposit the refractory.
5705266 Core material for the casting of articles and related process  
A core material for making cores to be used in molds for the casting of metals and comprising a mixture of hollow ceramic particles uniformly distributed throughout a resin binder of organic...
5558151 Die casting mold having lock rings for mounting an insert to a mandrel  
A cylinder liner for an internal combustion engine is held onto a detachable mandrel portion of a die by a plurality of split-ring-type compression springs. A sliplock on the ends of the split-ring...
Matches 1 - 3 out of 3