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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7258782 | Apparatus for sampling filter layer and method using the same An apparatus for sampling a filter layer and a method using the same are disclosed herein. The apparatus includes a cylindrical tube made of a transparent material; a screw installed at a central portion in the cylindrical tube, to be rotated for shifting a sample f... | 08/21/2007 |
| 7090018 | Reverse circulation clean out system for low pressure gas wells The present invention provides an apparatus and a method for removing undesirable material from a well bore in a hydrocarbon formation with minimum damage to the formation. The apparatus comprises a concentric tubing string, said concentric tubing string further com... | 08/15/2006 |
| 6908262 | Systems and methods for driving large diameter caissons A system for driving a large diameter caisson into the ground, comprising a crane assembly, a plurality of vibratory devices, a clamp assembly, a suspension assembly, and a timing system. Each vibratory device generates a vibratory force. The clamp assembly rigidly ... | 06/21/2005 |
| 6820701 | Visual probes and methods for placing visual probes into subsurface areas Visual probes and methods for placing visual probes into subsurface areas in either contaminated or non-contaminated sites are described. In one implementation, the method includes driving at least a portion of a visual probe into the ground using direct push, sonic... | 11/23/2004 |
| 6115061 | In situ microscope imaging system for examining subsurface environments A microscope imaging system comprises a tube including a bore and a sidewall having an aperture; an optically transparent window positioned in the aperture; a light source for generating first light signals which are directed at diffuse angles through the... | 09/05/2000 |
| 5589825 | Logging or measurement while tripping A method and apparatus are provided for obtaining measurements from a wellbore during tripping operations. A drilling sub is attached to the drillstring adjacent to or as near as possible to the drillbit before commencing normal drilling operations. Prior... | 12/31/1996 |
| 5543972 | Mirror for producing a development picture of the wall of a borehole in the ground and device therefor A compound type cone mirror installed inside a sonde moving up and down in a borehole for observing the whole circumference of the hole wall at an arbitrary depth at a time, a combined mirror for locally observing the hole wall in detail, and an elevating... | 08/06/1996 |
| 5123492 | Method and apparatus for inspecting subsurface environments Methods for visual inspection of subsurface environments by emplacing a substantially visually clear pipe or casing into the subsurface environment and thereafter introducing visual inspection, means, such as a video camera, into the pipe, whereby inspect... | 06/23/1992 |
| 5076372 | Under frame mounted soil sampler for light trucks An under frame tool bar attachment, for a light truck with a frame having a pair of generally parallel spaced apart frame side bars, includes an elongated tool bar, a pair of mounting assemblies, each adapted for securing the tool bar to a respective one ... | 12/31/1991 |
| 4896726 | Slip stream device A device and method for continuously adding chemicals to a producing oil well to prevent the formation of paraffins, emulsions, scale and to prevent corrosion is described. The device includes an above ground mixing chamber having an inlet and an outlet. ... | 01/30/1990 |
| 4796697 | Slip stream device A device for continuously adding chemicals to a producing oil well to prevent the formation of paraffins, emulsions, scale and to prevent corrosion is described. The device includes an above ground mixing chamber having an inlet and an outlet. A portion o... | 01/10/1989 |
