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发明名称
Apparatus for making button blanks from pearl stock
摘要
申请公布号
US2024715(A)
申请公布日期
1935.12.17
申请号
US19340754022
申请日期
1934.11.21
申请人
BONNETT WILLIAM C
发明人
BONNETT WILLIAM C.
分类号
B28D5/00;B28D5/02;B29D19/04
主分类号
B28D5/00
代理机构
代理人
主权项
地址
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