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发明名称
RETRACTABLE WHEEL CHOCK
摘要
申请公布号
CA550255(A)
申请公布日期
1957.12.17
申请号
CAD550255
申请日期
申请人
CALUMET STEEL CASTINGS CORPORATION
发明人
MARION C. WILSON;BOHUMIL A. ZIKMUND;EMIL VESELIK
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主分类号
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