Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
Inventor
active
Binder for preparing improved cores and molds
Cold set phenol-formaldehyde resin
Foundry binder
Foundry core composition of aggregate and a binder therefor
Foundry core composition of aggregate and a binder therefor
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Profile ID: LFUS-PAI-P-228494