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 |
| 6176778 | Threshing of harvested grain Harvested grain in the form of including ears, pods to be threshed are transported axially into an inclined threshing zone. Grain is liberated and falls through a sieve forming a bottom of the threshing zone. Most of the lightweight material or chaff is c... | 01/23/2001 |