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公开(公告)号：US1644706A
公开(公告)日：1927-10-11
申请号：US12196426
申请日：1926-07-12
Applicant: ROBERT JAMES WALKER
Inventor： LOUIS BERNON MAURICE
IPC: B62B7/08
CPC classification number: B62B7/08 , B62B2205/04
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