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公开(公告)号：US915320A
公开(公告)日：1909-03-16
申请号：US1906333279
申请日：1906-09-04
Applicant: TROTT ROLLAND S
Inventor： TROTT ROLLAND S
CPC classification number: F16H25/12 , Y10T74/1526 , Y10T74/18312
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