发明名称 Aeronautical navigation plotting instrument
摘要 An aeronautical navigation plotting instrument is provided that includes a plotting frame and a compass rose attached to the plotting frame. The compass rose includes angular markings incrementally disposed thereon about a center of the compass for defining the angular orientation of the compass. A longitudinal slot is aligned with the center of the compass rose and extends through the plotting frame to define an opening for receiving a writing instrument. A plurality of first radial openings extends through the plotting frame to allow a writing instrument to extend therethrough. Each first radial opening is incrementally spaced from an originating opening in the plotting frame to form a plurality of incrementally spaced radial distances from the originating opening.
申请公布号 US7389161(B2) 申请公布日期 2008.06.17
申请号 US20040012467 申请日期 2004.12.15
申请人 CSIK STEPHEN C;BENDER KEVIN LEE 发明人 CSIK STEPHEN C.;BENDER KEVIN LEE
分类号 B64C23/00;G01S19/51;G01C21/20;G06F17/00;G06G1/00 主分类号 B64C23/00
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