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发明名称
Spring motor
摘要
申请公布号
US1829265(A)
申请公布日期
1931.10.27
申请号
US19310545392
申请日期
1931.06.19
申请人
SHOE FORM CO., INC.
发明人
WITT WILLIAM J. DE
分类号
F03G1/00
主分类号
F03G1/00
代理机构
代理人
主权项
地址
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