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| 6120300 | Reward enriched learning system and method II |
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| 6079982 | Interactive simulator ride |
| 6079985 | Programmable sound and music making device |
| 6056552 | Language analysis instrument |
| 6050826 | Infant simulation device and method therefore |
| 6050874 | Balloon coupling strip |
| 6048209 | Doll simulating adaptive infant behavior |
| 6011949 | Study support system |
| 6002915 | Management system for interactive on-line system |
| 6002914 | Method and apparatus for simulating reverberation in a multipath ... |
| 5995803 | Method and apparatus for simulating a multipath sonar system |
| 5993217 | Learning apparatus |
| 5983067 | Method and apparatus for simulating cross-correlation coefficient... |
| 5980254 | Electronically controlled weapons range with return fire |
| 5978647 | Method and apparatus for simulating autocorrelation coefficients ... |
| 5978646 | Method and apparatus for simulating a lofargram in a multipath so... |
| 5978648 | Interactive multimedia performance assessment system and process ... |
| 5967793 | Relationship-based computer-aided-educational system |
| 5967787 | Educational display with a clock and with numeral and date blocks... |
| 5957746 | Device for holding and rotating candy |
| 5957452 | Dice-like apparatus and method for consulating the I Ching |
| 5957698 | Method of instruction |
| 5951297 | System and method for teaching reading skills using a wagering ga... |
| 5947744 | Training apparatus and method for coronary artery anastomoses fea... |
| 5941709 | Weapon simulator |
| 5930809 | System and method for processing text |
| 5927987 | Interactive modular educational system |
| 5915694 | Decoy utilizing infrared special material |
| 5906493 | Firefighter training door device |
| 5906492 | Educational phonetic card game using tape recorded pronunciation |
| 5873733 | Training unit for the pacemaker emergency intervention system usi... |
| 5863209 | Educational image display device |