Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 5159768 | Shoe with music generating unit in the tongue A musical shoe having a squeeze-activated tone generator concealed in an upper portion of the tongue of the shoe. A seam across the tongue below the upper portion provides a relatively flexible hinge about the instep which permits an operator's fingers to... | 11/03/1992 |
