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Class Information
Number: 434/324
Name: Education and demonstration > Question or problem eliciting response > Image projector included in examining means
Description: Subject matter wherein the question or problem is projected by optical means from an image carrier onto a viewing screen.










Sub-classes under this class:

Class Number Class Name Patents
434/325 And light detector 13


Patents under this class:

Patent Number Title Of Patent Date Issued
8540520 Apparatus and method for instructional information delivery Sep. 24, 2013
7088849 Method and apparatus for detecting low contrast object in a diagnostic image Aug. 8, 2006
6751351 Test question response verification system Jun. 15, 2004
6652286 Teaching device Nov. 25, 2003
6233428 System and method for distribution of child care training materials and remote monitoring of child care centers May. 15, 2001
6171188 Game device for an entertainment show Jan. 9, 2001
6058367 System for matching users based upon responses to sensory stimuli May. 2, 2000
5716273 Apparatus and method for controlling educational and amusement use of a television Feb. 10, 1998
5002491 Electronic classroom system enabling interactive self-paced learning Mar. 26, 1991
4973254 Educational apparatus Nov. 27, 1990
4898537 Locating system for maps and other diagrams and displays Feb. 6, 1990
4552535 Mechanical assembly for audio-visual teaching machines Nov. 12, 1985
4482328 Audio-visual teaching machine and control system therefor Nov. 13, 1984
4089125 Color-assist teaching aid and method therefor May. 16, 1978
4043053 Educational game Aug. 23, 1977
4011664 Self-correcting answer machine Mar. 15, 1977
3999307 Teaching machine Dec. 28, 1976
3946503 Audio-visual apparatus and method of using the apparatus for obtaining computer compatible data from an individual Mar. 30, 1976
3932948 Audio-visual learning system Jan. 20, 1976











 
 
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