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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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