Invention Grant
US3554552A Frangible article composed of polystyrene and polyethylene waxes 失效
由聚苯乙烯和聚乙烯泡沫组成的易碎物品

Frangible article composed of polystyrene and polyethylene waxes
Abstract:
The invention comprises fragile molded articles composed of compositions of polystyrene and polyethylene waxes, together with a lubricant or mold release agent, which articles are useful as targets in the practice of skeet shooting.
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