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公开(公告)号：US2299243A
公开(公告)日：1942-10-20
申请号：US39732041
申请日：1941-06-09
Applicant: MAYER SR EDWARD ROLLAND
Inventor： MAYER SR EDWARD ROLLAND
IPC: B60C5/10
CPC classification number: B60C5/10 , Y10T152/10522 , Y10T152/10666
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