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发明名称
STAIRWAY
摘要
申请公布号
CA777450(A)
申请公布日期
1968.02.06
申请号
CAD777450
申请日期
申请人
BLUMCRAFT OF PITTSBURGH
发明人
WILLIAM J. HORGAN, JR.;LOUIS BLUM
分类号
主分类号
代理机构
代理人
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