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 |
| 5041826 | Identification system A passive integrated transponder (PIT) is attached to or embedded in an item to be identified. It is excited via an inductive coupling from an interrogator. The PIT responds to the interrogator via the inductive coupling with a signal constituting a strea... | 08/20/1991 |