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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 5063610 | Broadcasting system with supplemental data transmission and storage A technique for broadcasting program material together with encoded items of information pertaining to the program material such as the title of a broadcast musical piece, the artist name, catalog number, and the like. A number of sources of recorded prog... | 11/05/1991 |
