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公开(公告)号：US3506819A
公开(公告)日：1970-04-14
申请号：US3506819D
申请日：1965-10-18
Applicant: SNAM PROGETTI
Inventor： CARLI ROBERTO , GERVASIO VINCENZO , SPALLANZANI GIORGIO
CPC classification number: G06G7/64
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