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公开(公告)号：US3069307A
公开(公告)日：1962-12-18
申请号：US2338960
申请日：1960-04-20
Applicant: PETROLITE CORP
Inventor： BOAZ WILLIAM M , LISSANT KENNETH J
IPC: D21C5/02
CPC classification number: D21C5/027 , Y02W30/648
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公开(公告)号：CA729071A
公开(公告)日：1966-03-01
申请号：CA729071D
Applicant: PETROLITE CORP
Inventor： BOAZ WILLIAM M , LISSANT KENNETH J
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