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发明名称
Apparatus for casting helical objects and the like
摘要
申请公布号
US1992170(A)
申请公布日期
1935.02.26
申请号
US19310583870
申请日期
1931.12.30
申请人
ART METAL WORKS, INC.
发明人
BURCHETT WALTER J.
分类号
B29C33/00;B29D1/00
主分类号
B29C33/00
代理机构
代理人
主权项
地址
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