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经营范围
发明名称
Winged drill screw
摘要
申请公布号
US5046905(A)
申请公布日期
1991.09.10
申请号
US19890376325
申请日期
1989.07.06
申请人
EMHART INC.
发明人
PIACENTI, FRANK;FLINCHUM, STEVEN N.
分类号
B23G5/06;B21K5/02;F16B25/10
主分类号
B23G5/06
代理机构
代理人
主权项
地址
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