Quotables
"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 6931741 | Scale device In a scale device including a scale unit (4) and detector (5), the scale unit (4) includes a scale member (6) formed from a long material and having at least a pair of fixing holes (12) formed therein across a position signal carry... | 08/23/2005 |
| 5112126 | Apparatuses and methods for making geophysical measurements useful in determining the deflection of the vertical A non-magnetic apparatus is disclosed for finding the deflection of the vertical. That apparatus has a device for finding an instrument spatial angle between a reference direction and an instrument characterization direction, and a device for finding a de... | 05/12/1992 |
| 4802150 | Mud pressure control system with magnetic torque transfer A down-hole signal generator for a mud-pulse telemetry system comprises a flow constrictor defining a throttle orifice for the mud passing along a drill string, a throttling member displaceable with respect to the throttle orifice to modulate the mud pres... | 01/31/1989 |
| 4636995 | Mud pressure control system A down-hole signal generator for a mud-pulse telemetry system comprises a flow constrictor defining a throttle orifice for the mud passing along a drill string, a throttling member displaceable with respect to a casing to modulate the mud pressure for the... | 01/13/1987 |
| 3983948 | Method and apparatus for indicating the orientation of a down hole drilling assembly A drilling assembly is equipped with apparatus that includes a device that periodically changes the resistance to the flow of drilling fluid through the drill pipe to create pressure pulses that can be detected at the earth surface and a sensor for contro... | 10/05/1976 |
