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公开(公告)号：US1873464A
公开(公告)日：1932-08-23
申请号：US67782223
申请日：1923-11-30
Applicant: LEHMANN OLSEN ROLF
Inventor： LEHMANN OLSEN ROLF
IPC: B60T11/04
CPC classification number: B60T11/043
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