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公开(公告)号：US1338807A
公开(公告)日：1920-05-04
申请号：US30506819
申请日：1919-06-18
Applicant: BEAULIEU EUGENE A
Inventor： BEAULIEU EUGENE A
IPC: B60C7/10
CPC classification number: B60C7/102 , Y10T152/10009
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