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发明名称
Couch
摘要
申请公布号
US2932038(A)
申请公布日期
1960.04.12
申请号
US19570679647
申请日期
1957.08.22
申请人
SPRAGUE ARTHUR J
发明人
SPRAGUE ARTHUR J.
分类号
A61H1/02
主分类号
A61H1/02
代理机构
代理人
主权项
地址
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