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公开(公告)号：US3501798A
公开(公告)日：1970-03-24
申请号：US3501798D
申请日：1968-04-09
Applicant: CARRARO ENNIO
Inventor： CARRARO ENNIO
CPC classification number: A47L11/40 , A47L1/02 , A47L1/05 , A47L11/10 , A47L11/4038 , A47L11/4069 , A47L11/4077 , A47L11/4088
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