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专利名称：Adjustable spark arrester for fireplace flue发明人：Richard A. Dortzbach申请号：US06/346276申请日：19820205公开号：US04386571A公开日：19830607
摘要：An adjustable spark arrester for a chimney flue is provided wherein the arresterhood is held by adjustable means permitting the arrester to be installed without the useof tools.
申请人：DORTZBACH; RICHARD A.
代理人：Robert G. Slick
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