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 |
| 6454109 | Clothesline system with a support system and improved clothespins A clothesline system is provided for automatically applying clothespins to articles to be dried once they are placed on a clothesline. The clothesline system comprises first and second pulleys, which are positioned at a spaced apart distance from each oth... | 09/24/2002 |
| 3993197 | Line tensioning device This disclosure pertains to a line tensioning device adapted to automatically tension a line fastened to an arm. The arm alternately engages outwardly spring biased rows of cams disposed on an upper and lowermost edge of a beam member which inturn is secu... | 11/23/1976 |
