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发明名称
Elevating device
摘要
申请公布号
US2414684(A)
申请公布日期
1947.01.21
申请号
US19450625187
申请日期
1945.10.29
申请人
WOHLFORTH WALTER W
发明人
WOHLFORTH WALTER W.
分类号
B60P1/44
主分类号
B60P1/44
代理机构
代理人
主权项
地址
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