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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 5651016 | Ultrahigh speed laser An apparatus and method for obtaining ultra-high speed operation of a semiconductor laser diode is presented. The invention utilizes any of a variety of conventional laser diodes in combination with cooling means for operation of the laser at temperatures... | 07/22/1997 |
| 5619140 | Method of making nuclear magnetic resonance probe coil A method of making a an NMR coil is provided. A coil is patterned of a film of a conductive material on a substrate. The coil mask is designed so that the resultant coil will have a lower resonant frequency than the desired frequency of the final coil. Th... | 04/08/1997 |
| 5600243 | Magnetically shielded magnetic sensor with squid and ground plane A coupling structure for coupling a feedback signal to a superconducting quantum interference device (SQUID) by mutual inductance. In one embodiment the SQUID loop (A) is shielded from external magnetic fields perpendicular to it by a superconducting grou... | 02/04/1997 |
| 5572127 | Inhomogeneities in static magnetic fields near superconducting coils Inhomogeneities in the magnetic field in the vicinity of a superconducting NMR receiver coil are avoided by placing the probe, at about room temperature, within the magnetic field, cooling rapidly to just above the critical temperature of the superconduct... | 11/05/1996 |
