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1.发明授权
公开(公告)号：US1494857A
公开(公告)日：1924-05-20
申请号：US62696823
申请日：1923-03-22
Applicant: ERNEST MATTLET
Inventor： ERNEST MATTLET
IPC: B60T11/04
CPC classification number: B60T11/043
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