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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 |
| 7210880 | Lock set installation apparatus and kit and method of using the same A lock set installation apparatus has a pair of hole saw guides which locate a hole to receive door operating members of a lock set. Each hole saw guide has at least one rail member which oppose one another. A lock bolt hole mechanism is movable and coupled with the... | 05/01/2007 |
| 7210239 | Slider device and measuring instrument A slider device (200, 800) according to the present invention includes a base (200); a running head (300) slidably provided on said base (200) along the direction guided by a prespecified guide mechanism (400); a rack (510) ... | 05/01/2007 |
| 7082694 | Center point locator device Provided is a device that locates the center point of any one of a number of differently shaped objects in one manipulation. The device incorporates a bed plate and two opposing right angle sliding jaws to position a center punch or drill bit bushing to the center o... | 08/01/2006 |
| 6973739 | Rigger-spread measuring instruments An instrument for measuring rigger-spread of a boat has an elongate casing 1 for support athwartships of the boat with a shoulder 2 of the casing 1 abutting the outside of the gunwale 4 opposite the rigger 5 and a slidingly-adjusta... | 12/13/2005 |
| 6964106 | Laser level An improved laser level has a housing and a first shaft connected to the housing. Two bearings are disposed on the first shaft. A gimbal body is disposed on the two bearings. A second shaft is connected to the gimbal body. A third bearing is disposed on the second s... | 11/15/2005 |
| 6158137 | Center locator tool The center locator tool has a flat, rectangular case with a top wall, a bottom wall, and two opposing side walls. The interior of the case houses a spur gear rotatably mounted on a center post extending through the center of the case, the center post havi... | 12/12/2000 |
| 5062747 | Jig-boring device A jig-boring device, comprising an axle barrel which connects with bottom plate and is sheathed with lower gear, fixed support, upper gear and cover plate; a circular bottom plate connected to the bottom of the axle barrel; a lower gear placed on bottom p... | 11/05/1991 |
| 4981400 | Self-centering jig A self-centering jig for planar articles having a vertical and horizontal centerline, capable of centering in both the horizontal and vertical directions, is disclosed. The self-centering jig comprises a jig body a having a template section, a first pair ... | 01/01/1991 |
| 4163322 | Compass with fine adjustment A compass is provided which includes a fine adjustment mechanism comprising lateral spreader bars attached to the respective compass legs and a central drive wheel meshing with the spreader bars. The spreader bars and drive wheel are located in a compass ... | 08/07/1979 |
