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发明名称
MANHOLE DROP PREVENTION AND SAFETY CHAIN FOR SEWERAGE
摘要
申请公布号
JPH08170347(A)
申请公布日期
1996.07.02
申请号
JP19940334528
申请日期
1994.12.19
申请人
ARON KASEI CO LTD
发明人
HAYASHI KUNITSUGU
分类号
E02D29/12;(IPC1-7):E02D29/12
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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