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 |
| 4653775 | Preprinted image-receiving elements for laminated documents An image-receiving element adapted to the provision of a diffusion transfer photograph and having a preprinted security pattern between contiguous layers thereof is disclosed. The pattern comprises a patterning agent and a binder therefor preferentially a... | 03/31/1987 |
| 4322461 | ID Card laminar structures and a method for preparation thereof using a transfered adhesive Laminar structures comprising a color diffusion transfer photographic print bonded to a vinyl sheet using an adhesive mixture of a vinyl acetate-ethylene copolymer and a hydroxylated polymer, and a method for preparation thereof using an adhesive-supporti... | 03/30/1982 |
| 4311774 | Irradiation treatment of polymeric photographic film supports A process for heat-stabilizing polymeric supports for diffusion transfer photographic image-receiving elements. Such treatment eliminates distortion effects in these image-receiving elements when they are exposed to high temperatures, such as encountered ... | 01/19/1982 |
| 4232079 | Novel I.D. cards Laminated documents such as I.D. cards using a light-transmissive pigment material as a verification or validation pattern.... | 11/04/1980 |
| 4219599 | I.D. cards Laminated documents such as I.D. cards using a phosphorescent material as a verification or validation pattern.... | 08/26/1980 |
| 4151666 | I.D. Cards Laminated documents such as I.D. cards using a light-transmissive pigment material as a verification or validation pattern.... | 05/01/1979 |
| 4151667 | Novel I.D. cards Laminated documents such as I.D. cards using a phosphorescent material as a verification or validation pattern.... | 05/01/1979 |
