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Class Information
Number: 434/286
Name: Education and demonstration > Science > Astronomy > Representation of light generating celestial body > Light spot
Description: Subject matter wherein the body is simulated by a dot of light on a surface.

Patents under this class:

Patent Number Title Of Patent Date Issued
8646918 Projection system Feb. 11, 2014
7004588 Planetarium and point light source for use in same Feb. 28, 2006
6827454 Imaging prevention method and system Dec. 7, 2004
6793353 Imaging prevention method and system Sep. 21, 2004
6623126 Projector for use in planetarium Sep. 23, 2003
6048210 Planetarium Apr. 11, 2000
6033230 Planetarium Mar. 7, 2000
6030227 Digital solar system model Feb. 29, 2000
5717529 Controllable horizon diaphragm for planetaria Feb. 10, 1998
5492475 Planetarium and projection apparatus for same Feb. 20, 1996
5460528 Starlight and moonlight hybrid simulation using fiber optics Oct. 24, 1995
5324224 Spherical construction toy and light apparatus Jun. 28, 1994
5283601 Projector and process for creating a night-sky illusion Feb. 1, 1994
5194009 Projection apparatus for planetariums Mar. 16, 1993
5097640 Frame support for paneled screens and like structures Mar. 24, 1992
5082447 Star projection device Jan. 21, 1992
5035623 Planetarium Jul. 30, 1991
4955714 System for simulating the appearance of the night sky inside a room Sep. 11, 1990
4858079 Light projecting toy musical box Aug. 15, 1989
4776666 Projector for projecting fixed star Oct. 11, 1988
D294715 Planetarium or similar article Mar. 15, 1988
4643681 Planetarium having an auxiliary projector independently rotatable about a star field projector Feb. 17, 1987
4639224 Multiple projector planetarium drive system Jan. 27, 1987
4606627 Light shutter mechanism for planetarium Aug. 19, 1986
4588384 Fixed-star projecting machine for planetarium May. 13, 1986
4579534 Manually indexed adjustable focal length planetarium Apr. 1, 1986
4403964 Star projectors for planetaria Sep. 13, 1983
4311468 Planet projection Jan. 19, 1982
4213254 Astronomical optical simulator Jul. 22, 1980
4178701 Cylindrical planetarium projector Dec. 18, 1979
4166401 Gear means for control of planetaria projectors Sep. 4, 1979
4141157 Portable teaching device representing the sky with the stars Feb. 27, 1979
4096646 Device for identifying and locating a star in the heavens Jun. 27, 1978
4045885 Planetarium with star identifying means Sep. 6, 1977
4020568 Planetarium moon projector May. 3, 1977
3934358 Drive apparatus for independently changing the phase of the moon for planetarium Jan. 27, 1976

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