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公开(公告)号：US3427683A
公开(公告)日：1969-02-18
申请号：US3427683D
申请日：1967-01-18
Applicant: US INTERIOR
Inventor： NAZARUK STANLEY , ROSA CARL , HEADRICK ALVIN F
CPC classification number: B30B11/201 , B01J2/22 , Y10S425/101
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