发明名称 Combination sidewalk bolt
摘要 A combination sidewalk bolt is provided. The bolt includes a head portion, a threaded shaft portion extending perpendicularly outward from a first side of the head portion, a Phillips head recess well formed within a second side of the head portion for use in driving the bolt, and a slotted screwdriver slot provided in the second side of the head portion. A depth of the recess well is greater than the width of the head portion between the first side and the second side.
申请公布号 US6328517(B1) 申请公布日期 2001.12.11
申请号 US20000532885 申请日期 2000.03.22
申请人 MANN GREGORY STEVEN;MANN GABRIELLE MARDER 发明人 MANN GREGORY STEVEN;MANN GABRIELLE MARDER
分类号 F16B23/00;F16B33/02;(IPC1-7):F16B23/00;F16B35/06 主分类号 F16B23/00
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