专利名称：Step layout device发明人：Stanley D. Campbell申请号：US07/149380申请日：19880128公开号：US04833791A公开日：19890530
摘要：A step layout device for giving a visual and physical representation of riser andtread dimensions which have been or are being selected for a stairway, wherein the devicehas at least one lower and one upper pair of planar members, the members of each pairhaving cooperating vertical ruled portions and cooperating adjustable connectormechanisms adapted to planarly connect the members of each pair in selected verticallydimensioned riser postures, the pairs having adjacent horizontal edge portions providedwith cooperating horizontal ruled portions, and cooperating adjustable connectormechanisms on the pairs adapted to planarly connect the pairs in selected horizontallydimensioned tread postures.
申请人：CAMPBELL; STANLEY D.
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