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公开(公告)号：US1167919A
公开(公告)日：1916-01-11
申请号：US4598115
申请日：1915-08-17
Applicant: M M GILCHRIST , J C SPAULDING , NATHAN JOHN
Inventor： NATHAN JOHN
CPC classification number: B60S5/043 , Y10T137/36 , Y10T137/3662 , Y10T137/7838
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