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发明名称
METHOD AND DEVICE FOR PREVENTING SNOW DROP AND FREEZING OF ROOF FOR USE IN COLD PLACE AND WATER DRAIN OR RAINWATER GUTTER FOR USE WITH IT
摘要
申请公布号
JPH05280226(A)
申请公布日期
1993.10.26
申请号
JP19920077537
申请日期
1992.03.31
申请人
发明人
分类号
E04D13/00;E04D13/10;E04H9/16;(IPC1-7):E04H9/16
主分类号
E04D13/00
代理机构
代理人
主权项
地址
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