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公开(公告)号：US1233898A
公开(公告)日：1917-07-17
申请号：US10803916
申请日：1916-07-07
Applicant: MILLER JAMES HAMILTON
Inventor： MILLER JAMES HAMILTON
CPC classification number: B61C15/102 , Y10T137/6858 , Y10T137/86348
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