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发明名称
Method and implement for expanding springs
摘要
申请公布号
US1866782(A)
申请公布日期
1932.07.12
申请号
US19270280376
申请日期
1927.11.01
申请人
UNITED METAL HOSE CO. INC.
发明人
WHITE JONATHAN NEWTON
分类号
B25B25/00
主分类号
B25B25/00
代理机构
代理人
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地址
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