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Class Information
Number: 434/303
Name: Education and demonstration > Science > Physics > Optics
Description: Subject matter relating to light, its genesis or propagation, or the effect that it undergoes or produces when propagated through a substance or object (e.g., a lens or prism.

Patents under this class:

Patent Number Title Of Patent Date Issued
7963771 Experiment and education system employing a plurality of units Jun. 21, 2011
7957059 Device and method for demonstrating optical effects Jun. 7, 2011
7775799 Glare reduction demonstrator Aug. 17, 2010
6402521 Apparatus for demonstrating changes in motion with respect to time Jun. 11, 2002
6382982 Educational tool comprised of selectable optically-linked modules May. 7, 2002
6129553 Film image display system Oct. 10, 2000
5108293 Method and apparatus for displaying a beam of light Apr. 28, 1992
5080940 Latent image projecting mirror surface body Jan. 14, 1992
4898560 Mirror pattern forming amusement device Feb. 6, 1990
4540368 Educational visual apparatus Sep. 10, 1985
4133124 Display device Jan. 9, 1979
4033052 Optical teaching aid Jul. 5, 1977
3962802 Educational device Jun. 15, 1976
3932949 Method for demonstrating optical aberration formation Jan. 20, 1976

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