Patent search ap:("EQUIPMENT DEV CO INC") AND inv:"COCCHIARELIA OTELL M" Page 1

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发明授权
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公开(公告)号：US2489681A

公开(公告)日：1949-11-29

申请号：US814548

申请日：1948-02-13

Applicant: EQUIPMENT DEV CO INC

Inventor： SMITH EDMUND G , COCCHIARELIA OTELL M

IPC: B01D33/09

CPC classification number: B01D33/09 , B01D33/82 , B01D2201/282 , Y10T137/86863

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