Coloring sheet

Colour coded system for writing

Colour selection apparatus

Combination furniture for audio-visual teaching

Combination slide device

Combined pattern holder and pattern position indicator

Common integrated circuit for multiple antennas and methods

Communication device and method for deaf and mute persons

Communication interface for a financial counseling system

Communication system for classroom use and the like

Communication system for speech disabled individuals

Communication system with text message retrieval based on...

Communication test system

Community based internet language training providing...

Component display board

Compound motion demonstrating device

Compressed data base for radar land mass simulator

Computational teaching device

Computer assisted and/or implemented process and system for...

Computer assisted instruction via video-telephone