发明名称 Surveyor's marker
摘要 A surveyor's marker includes an elongated body portion tapered in an axial direction from a head portion to a generally pointed tip. The head portion has a cruxiform configuration enabling it to be used in a cross-hair's sense and seen at a substantial distance. The device is integrally molded such as by injection molding from a brightly colored and relatively stiff and inexpensive plastic.
申请公布号 US4970795(A) 申请公布日期 1990.11.20
申请号 US19890333363 申请日期 1989.04.04
申请人 WOODWARD, THOMAS F.;KLEESE, JAMES M. 发明人 WOODWARD, THOMAS F.;KLEESE, JAMES M.
分类号 G01C15/04 主分类号 G01C15/04
代理机构 代理人
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