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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 |
| 5896816 | Rerailer apparatus Disclosed is a rerailer apparatus that can be installed in a rail car for rerailing the rail car if it derails. The rerailer includes two vertical lifting members which are suspended from the rail car and are connected to a foot. These lifting members are... | 04/27/1999 |
| 5743190 | Rerailer apparatus Disclosed is a rerailer apparatus that can be installed in a rail car for rerailing the rail car if it derails. The rerailer includes two vertical lifting members which are suspended from the rail car and are connected to a foot. These lifting members are... | 04/28/1998 |
| 5682821 | Displacement device for the horizontal displacement of heavy loads The invention relates to a displacement device for the horizontal displacement of heavy loads, especially of derailed rail vehicles or the like, having a lifting cylinder and a preferably hydraulically driven displacement mechanism, which allows the posit... | 11/04/1997 |
| 5664500 | Shifting device for horizontal shifting of heavy loads A shifting device for horizontal shifting of heavy loads with at least one lifting cylinder to raise the load, a support, and a preferably hydraulically actuated shifting mechanism, wherein the shifting mechanism has at least one horizontally arranged shi... | 09/09/1997 |
| 5203264 | Re-railing unit for derailed rail car A re-railing unit for re-railing a derailed rail car comprises a base, two stabilizer rams located at opposite ends of the base, and a port plate slidably mounted on the base. The support plate carries a pair of vertical lifting rams from which is suspend... | 04/20/1993 |
| 4825771 | Rail guided jack for lifting derailed rolling stock The invention provides a lifting device for re-railing railroad vehicles comprising a guide rail which is adapted to be disposed substantially horizontally in use, having an outer surface including a toothed rack, a traveller mounted by rollers for guided... | 05/02/1989 |
| 4809615 | Method and apparatus for re-railing working platforms A railroad platform using outriggers for stability utilizes a set of detachable rollers positioned intermediate the outriggers and the platform as weight bearing members. The rollers enable the platform to move along the outrigger as needed to re-align th... | 03/07/1989 |
| 4606273 | Railway carriage with set-off apparatus A set-off apparatus for moving a railway carriage transversely off the track includes eight vertically adjustable jacks arranged in four pairs. Two of the jacks of two of the pairs are arranged in each corner of the railway carriage frame, and two pairs o... | 08/19/1986 |
