Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 4418856 | Apparatus for plaiting tow onto a conveyor An inverting tow plaiter adapted to position tow onto a receiving end of a main conveyor in a series of overlying laps oriented to permit trouble-free removal of tow from the main conveyor discharge end. The plaiter comprises a continuous, moving canvas b... | 12/06/1983 |