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Class Information
Number: 434/111
Name: Education and demonstration > Celestial navigation
Description: Subject matter relating to the use of a star for determining an object"s position, course, or distance traveled in relation to a reference such as the surface of the earth.

Patents under this class:

Patent Number Title Of Patent Date Issued
7890255 Navigation apparatus Feb. 15, 2011
6038777 Method and apparatus for sight reduction Mar. 21, 2000
5554031 Training system for reporting 911 emergencies Sep. 10, 1996
5456605 Telephone training apparatus and method Oct. 10, 1995
5188533 Speech synthesizing indicia for interactive learning Feb. 23, 1993
4672438 Tracking simulator Jun. 9, 1987
4310884 Microcomputer-controlled portable satellite signal simulator for exploration systems, and method of use Jan. 12, 1982
4267646 Telephone question and answer training device May. 19, 1981
4083121 Universal planisphere, sight reduction finder and identifier, guidance and computer system Apr. 11, 1978
4012851 Universal planisphere complete guidance and computer system Mar. 22, 1977
3947973 Navigation teaching aid Apr. 6, 1976

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