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公开(公告)号：US1506738A
公开(公告)日：1924-09-02
申请号：US58889022
申请日：1922-09-18
Applicant: SAFETY FIRST DEVICES COMPANY I
Inventor： EARNHEART LUCIEN T
IPC: B60C23/00
CPC classification number: B60C23/0496
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公开(公告)号：US1361570A
公开(公告)日：1920-12-07
申请号：US31943619
申请日：1919-08-23
Applicant: SAFETY FIRST DEVICES COMPANY
Inventor： EARNHEART LUCIEN T
IPC: B60C23/00
CPC classification number: B60C23/0496 , Y10T137/3662
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