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Class Information
Number: 434/290
Name: Education and demonstration > Science > Astronomy > Representation of light generating celestial body > Simulation of sun and earth
Description: Subject matter including representations of the sun and the earth.

Sub-classes under this class:

Class Number Class Name Patents
434/292 And moon 10
434/291 Simulation of motion of earth and another major planet around sun 13

Patents under this class:

Patent Number Title Of Patent Date Issued
6722890 Interactive astronomical system and method Apr. 20, 2004
6565360 Orrery May. 20, 2003
6524112 Interactive astronomical system and method Feb. 25, 2003
6238216 Planetary teaching age May. 29, 2001

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