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经营范围
发明名称
Adjustable springboard
摘要
申请公布号
US1902673(A)
申请公布日期
1933.03.21
申请号
US19320640712
申请日期
1932.11.01
申请人
STEVENSON HORACE N
发明人
STEVENSON HORACE N.
分类号
A63B5/10
主分类号
A63B5/10
代理机构
代理人
主权项
地址
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