Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 6148586 | Panel-shaped building element A building panel with a folded-plate structure made of perforated, trapezoidally corrugated sheet metal, plastic foam being attached into the corrugations so as to fill them, narrow sides of the building panel run parallel to the corrugations and have dia... | 11/21/2000 |
