发明名称 Knockdown sign post assembly
摘要 This invention consists of a knockdown sign post assembly which provides the user with a sign post that can easily be erected and taken down in a quick and efficient manner. The foundation or base of the sign post is readily placed into the ground to which the post for the sign attachment is affixed. Disassembly consists of disengaging the post from the foundation and then removing the foundation from the ground.
申请公布号 US4156332(A) 申请公布日期 1979.05.29
申请号 US19770828273 申请日期 1977.08.29
申请人 THOMPSON, EARL M 发明人 THOMPSON, EARL M
分类号 E04H12/08;E04H12/22;(IPC1-7):E02D5/74 主分类号 E04H12/08
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