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发明名称
FLOOR INSPECTION PORT HAVING VENTILATING FUNCTION FOR UNDERFLOOR PIT
摘要
申请公布号
JPH02221554(A)
申请公布日期
1990.09.04
申请号
JP19890042247
申请日期
1989.02.22
申请人
TAKENAKA KOMUTEN CO LTD
发明人
OSE HIROKATSU;NAKAMURA KAZUYA
分类号
E04F19/08
主分类号
E04F19/08
代理机构
代理人
主权项
地址
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