专利名称：Respirator filter发明人：Wen-Tsung Chang申请号：US10109697申请日：20020401
公开号：US20030183233A1公开日：20031002
专利附图：
摘要：An improved structure of respirator filter comprised of a laminated layers offireproof fabric, static fibers, active carbon fibers and non-woven filter cotton; interlacedwith airflow guides in among the layers of the filter; a hole or multiple holes beingrespectively provided at the center or in the peripheral of another airflow guide so to
create air conduction for increasing area and time for the gas to contact the filter forimproved smoke and toxicity filtration effects.
申请人：CHANG WEN-TSUNG
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