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Class Information
Number: 33/457
Name: Geometrical instruments > Straightedge type > Plural straightedges, relatively moveable > Multipivoted straightedges > Navigational
Description: Subject matter comprising a device specially designed for plotting or computing a given course through the air or on land or water.

Patents under this class:

Patent Number Title Of Patent Date Issued
6658746 Navigation plotter Dec. 9, 2003
6134796 Aircraft navigational plotter Oct. 24, 2000
5983509 Marine navigation device Nov. 16, 1999
5241754 Navigational aid for use with a map, chart, or the like Sep. 7, 1993
4941264 Device for reading directly from a chart the heading to be followed by an air or sea-going vehicle Jul. 17, 1990
4879812 Aerial map navigational aid Nov. 14, 1989
4866852 Aeronautic chart removably attachable course and position locator Sep. 19, 1989
4720921 Navigational instrument Jan. 26, 1988
4637143 Plotting device Jan. 20, 1987
4512087 Navigational aid device Apr. 23, 1985
4499665 Course correction calculator Feb. 19, 1985
4347669 Navigational calculating device Sep. 7, 1982
4327500 Computational aid device for Ekelund ranging May. 4, 1982
4283861 Plotting device Aug. 18, 1981
4270278 Wind vector resolution device Jun. 2, 1981
4208805 Navigational calculating device Jun. 24, 1980
4096635 Navigational computer Jun. 27, 1978
4095342 Radio navigation aid Jun. 20, 1978

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