Card game for learning

Card grading machine

Cardiopulmonary resuscitation manikin

Cartography

Categorized test item reporting system and method

Celestial object location device

Celestial teaching device

Charting equipment

Chemistry game

Chemistry teaching aid

Chess game device

Child growth chart with child safety tips

Child's educational toy

Child's entertainment and educational toy

Childbirth teaching apparel

Chord display device for fretted string instruments

Chord indicator for instruments having organ and piano-type...

Chord playing attachment for keyboard instruments

Chord search table for guitars

Circuit demonstrator