Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6793597 | Machine stitched soccer balls with floating bladder An improved soccer ball having a floating bladder and the method of manufacturing same. The soccer ball comprises a spherical rubber bladder and an outer cover of machine stitched multiple hexagonal and pentagonal pieces to form an outer cover for inserting the blad... | 09/21/2004 |
