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公开(公告)号：US1529515A
公开(公告)日：1925-03-10
申请号：US53237822
申请日：1922-01-28
Applicant: WILLIAM W WYANT , WALLACE SCOWDEN
Inventor： TANNER MORAN O
CPC classification number: F01L1/06 , F02B2075/027
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