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 |
| 4299225 | Surgical extracter The invention relates to improvements in surgical instruments and is particularly concerned with the novel construction of an instrument for use in the dislodging and extraction of gall stones from the common bile duct irrespective of their size or degree... | 11/10/1981 |
