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发明名称
Air filters
摘要
A generally tubular pleated paper filter element is constructed in the form of a frustrum of a cone having an aspect ratio (the ratio of element length to base diameter) in the range 1.5 to 2.5 and an included angle in the range 2 to 5 degrees.
申请公布号
US4498915(A)
申请公布日期
1985.02.12
申请号
US19800129786
申请日期
1980.03.12
申请人
WITCHELL, STANLEY P.
发明人
WITCHELL, STANLEY P.
分类号
B01D46/12;B01D46/24;B01D46/52;F02M35/024;(IPC1-7):B01D46/10
主分类号
B01D46/12
代理机构
代理人
主权项
地址
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