发明名称 FORM FOR CONCRETE FLAT WORK
摘要 A concrete flat work form system for facilitating the placement of floors, sidewalks, patios and the like in which the form element is bent or rolled from sheet material to an angle shape and further providing spaced holes for the reception of cooperatively shaped and drilled support stakes. The sheet material is cut adjacent the stake holes providing a tab at the form face for mating engagement of a similarly derived form element disposed in stacked arrangement above the first form element. The tab is positioned for non-interference with concrete finishing tools.
申请公布号 US3680823(A) 申请公布日期 1972.08.01
申请号 USD3680823 申请日期 1969.04.14
申请人 EARL H. LOUGHEED 发明人 EARL H. LOUGHEED
分类号 E01C19/50;E04G13/00;(IPC1-7):E01C7/00 主分类号 E01C19/50
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