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发明名称
METHOD OF FORMING CAVITY AT CENTER OF WOOD FOR CONSTRUCTION AND PREVENTING BREAKING POINT OF SURFACE
摘要
申请公布号
JPS5753307(A)
申请公布日期
1982.03.30
申请号
JP19800128274
申请日期
1980.09.16
申请人
WATANABE HAJIME
发明人
WATANABE HAJIME
分类号
B27M1/00;E04C3/12;E04C3/36
主分类号
B27M1/00
代理机构
代理人
主权项
地址
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