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 |
| 7316040 | System and method for positioning patient limbs during surgical procedures A system to facilitate surgical operations by optimally positioning limbs of patients lying on a surgery table. The system comprises a surgery table and a converter. The converter comprises five sub-systems with varying degrees of freedom. ... | 01/08/2008 |