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发明名称
Reel
摘要
申请公布号
US1803231(A)
申请公布日期
1931.04.28
申请号
US19270218074
申请日期
1927.09.07
申请人
CAMBLIN ROBERT G
发明人
CAMBLIN ROBERT G.
分类号
B65H49/32;B65H75/38;E21B19/00
主分类号
B65H49/32
代理机构
代理人
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地址
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