Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7011167 | Device for sealing a drill hole and for discharging drillings or stripped extraction material In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at ... | 03/14/2006 |
| 6854952 | Device for extending or shortening a network of pipes In a device for extending and shortening tubings used to transport drill cuttings and stripped material, a tube storage or tube magazine is provided on a frame (1) capable of being supported on the floor, wherein at least one lifting means (3) capable ... | 02/15/2005 |
| 5463172 | Waste disposal process A method of disposing hazardous industrial solid waste, preferably mill tailings, which comprises treating the waste to form a paste and pumping the paste to an underwater paste deposit site in a water saturated area, said area providing permanent water c... | 10/31/1995 |
| 5380127 | Non-entry method of underground excavation in weak or water bearing grounds A method of excavating an underground area liable to flooding or collapsing during excavation, wherein the area is susceptible to disaggregation by high pressure water jet and is located above rock of strength suitable for drifting a gallery comprises dri... | 01/10/1995 |
