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发明名称
Calk device
摘要
申请公布号
US2299927(A)
申请公布日期
1942.10.27
申请号
US19390272351
申请日期
1939.05.08
申请人
A. G. SPALDING & BROS. INC.
发明人
PIERCE HOWARD M.;HERMSON JOHN H.
分类号
A43C15/16
主分类号
A43C15/16
代理机构
代理人
主权项
地址
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