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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 |
| 5767749 | Microwave oscillator A microwave oscillator with an M-type interdigital slow wave resonator structure is disclosed. In the above oscillator, the anode has top, middle and bottom resonance discs. The top disc has downward extending vanes and defines an upper resonance chamber,... | 06/16/1998 |
| 5280218 | Electrodes with primary and secondary emitters for use in cross-field tubes A cathode of a crossed field device includes a first electrode and a second electrode disposed about and dielectrically spaced from the first electrode. In a preferred embodiment the electrode comprises a pair of electrodes, a first one of the pair being ... | 01/18/1994 |
| 3980920 | Multi-resonator microwave oscillator A microwave oscillator is provided having electron emissive means and a first surrounding resonant structure. The first structure is fabricated of a material capable of emitting secondary electrons. A second resonant structure surrounds the secondary elec... | 09/14/1976 |
