Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 6341699 | Method and apparatus for sorting carpet or similar types of material The invention relates to a method for sorting carpet or similar pieces of material to material type and the like, wherein the method comprises the following steps of: placing pieces of carpet on a transport system; disentangling or separating the pieces o... | 01/29/2002 |
| 5667690 | Process for removing noxious compounds A process is described for removing noxious compounds such as hydrocarbons which may or may not contain halogen and/or may or may not be aromatic, from solids (soil), water or gas, according to which process the solid, the water or the gas is treated with... | 09/16/1997 |
