An electrified table cloth for preventing crawling insects from gaining access to the consumer's food or drink.
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| Number | Title | Issue Date |
| 3942179 | Filtered-noise jammer A device for generating spot or barrage noise to jam communication equipment, missiles or radar employing a modulating noise that has the high frequencies removed. Said device comprises a filter means and an amplifier in circuit with the noise source, mod... | 03/02/1976 |