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公开(公告)号：US2651491A
公开(公告)日：1953-09-08
申请号：US23117651
申请日：1951-06-12
Applicant: ELECTROL INC
Inventor： ASHTON BENJAMIN N , FRAIN JOHN P , RAWDING EMERSON S
CPC classification number: F16K31/56 , F15B13/02 , Y10T137/2567 , Y10T137/2569 , Y10T137/7781
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