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 |
| 4416363 | Vending machine with separate interlocking sections A vending machine with separate lockable storage sections and an actuating key for insertion into the vending machine and unlocking the sections, the actuating key having a workable matrix, and a stamping mechanism which is actuatable by removal of an art... | 11/22/1983 |
| 4406618 | Method of operating continuous heat treatment furnace for metal strip coils A method of operating a continuous heat treatment furnace for metal strip coils includes steps of enclosing them in muffles in the furnace supplied with an atmosphere gas containing a combustible gas such as hydrogen and feeding the muffles into and throu... | 09/27/1983 |
