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公开(公告)号：US1967024A
公开(公告)日：1934-07-17
申请号：US36901129
申请日：1929-06-06
Applicant: STANCO INC
Inventor： FULTON STEWART C
CPC classification number: A01N65/00 , Y02A50/352 , Y02A50/354
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