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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 |
| 4789993 | One frequency repeater for a digital radio system A one frequency repeater includes a receiver for receiving a reception signal through a receiving antenna, a variable frequency characteristic filter for generating a signal for cancelling an interference signal caused by leakage of a transmission signal ... | 12/06/1988 |
| 4701935 | One frequency repeater for a digital microwave radio system with cancellation of transmitter-to-receiver interference A digital microwave radio repeater using the same carrier frequency for the transmitter and the receiver carriers for improving the frequency utilization efficiency. The transmitter-to-receiver interference signal is cancelled by producing an estimated-in... | 10/20/1987 |
| 4565975 | Synchronization of pull-in oscillators in the transmission of digital signals Transmission lines for digital signals may include a large number--for example, several hundred--of intermediate generators. In this case, telemetering units are provided at the end points and at intermediate points, by means of which the digital telemetr... | 01/21/1986 |
