发明名称 Two-piece self-locking pole stand assembly
摘要 A two-piece self-locking pole stand assembly includes a sleeve base that is secured into the ground and a tubular insert that fits snugly into the base, housing two pivot arms that engage the base and automatically lock the insert to it upon insertion of the pole.
申请公布号 US5337989(A) 申请公布日期 1994.08.16
申请号 US19930844198 申请日期 1993.03.02
申请人 APPLE, PHILLIP C. 发明人 APPLE, PHILLIP C.
分类号 E04H12/22;(IPC1-7):E02D5/74 主分类号 E04H12/22
代理机构 代理人
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