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 |
| 8042620 | Manually adjustable packer wheel seeding system and method An implement includes a frame configured to couple to a tool bar, a linkage coupled to the frame, and a ground engaging tool extending from a shank, wherein the shank is coupled to the linkage. The implement also includes a packer wheel configured to control a posit... | 10/25/2011 |
| 4350210 | Diker, apparatus, system and process of operation An array of several like dimensionally stable readily manufactured diking apparatuses each of which operates in a furrow automatically produces a series of dams of uniform size at regular intervals of travel by repeatedly alternating positions one of a pa... | 09/21/1982 |