Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
Inventor
active
Polymeric compositions useful in oxygen permeable contact lenses
Polymeric compositions useful in oxygen permeable contact lenses
Polymeric compositions useful in oxygen permeable contact lenses
Polyurethane elastomers prepared from diamine curing agents
Synthetic polymers by polyisocyanate polyaddition process
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