发明名称 Locating elements of construction beneath the surface of earth soils
摘要 Locating underground utility lines or elements of construction with a frangible body or tape. The tape includes printing indicia identifying the type of underground facility with the printing indicia protected from the environment. The tape is color coded to the type of underground facility and has soil contrasting reflective stripes to aid in tape detection.
申请公布号 US4623282(A) 申请公布日期 1986.11.18
申请号 US19840680961 申请日期 1984.12.12
申请人 ALLEN, GORDON H. 发明人 ALLEN, GORDON H.
分类号 F16L1/11;(IPC1-7):F16L57/00;G01D21/00 主分类号 F16L1/11
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