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摘要
申请公布号
US2685371(A)
申请公布日期
1954.08.03
申请号
US19480058285
申请日期
1948.11.04
申请人
GENERAL MOTORS CORPORATION
发明人
GRETZINGER JOHN R.
分类号
B01D29/21;B01D35/147
主分类号
B01D29/21
代理机构
代理人
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