...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 7386912 | Expandable cleaning brush A cleaning and scouring brush generally made from a pair of twisted wire arms, each arm having a cleaning portion shaped to conform to the interior profile of an article to be cleaned. The portions are provided with a cleaning or scouring device such as a sponge, sc... | 06/17/2008 |
| 7363676 | Adjustable diameter cylindrical mechanism A pair of foundations held on a central rod disposed along an axis secure a number of connecting rods which, in turn, support portions of a cylinder oriented parallel to the axis. As the angle between the connecting rods and the central rod is adjusted, the cylinder... | 04/29/2008 |
| 6917176 | Gas main robotic inspection system The present invention provides a long-range, untethered, live, in-pipe inspection system that includes a self-propelled train having a plurality of modules; joint members for interconnecting adjacent modules, data collection components, and wireless communication co... | 07/12/2005 |
| 6775874 | Expandable cleaning brush A cleaning and scouring brush generally made from a pair of twisted wire arms, each arm having a cleaning portion shaped to conform to the interior profile of an article to be cleaned. The portions are provided with a cleaning or scouring device such as a sponge, sc... | 08/17/2004 |
| 6725495 | Adjustable hair brush In a first aspect of the invention an adjustable hairbrush includes an inner cylinder to which are affixed brush bristles and an outer cylinder through which the brush bristles extend. The inner and outer cylinders may be rotated about a common axis with respect to ... | 04/27/2004 |
| 6630034 | Firearm bore cleaner A bore cleaner including a first flexible cord having a weighted member attached to a first end, a cleaning tool which is removably attachable to a second end of the first flexible cord in a first bore cleaner assembly, and a second, thicker flexible cord... | 10/07/2003 |
| 4562608 | Chimney cleaning brush This invention relates to a brush for cleaning chimneys, which brush can be passed in a folded configuration through a chimney in one direction. The brush can then be passed in the opposite direction through the chimney, and assumes during such passage an... | 01/07/1986 |
| 4446880 | Make-up brush A make-up brush, in particular an eyelash brush, includes a bellows or longitudinally slit sleeve defining bristles and adapted to be varied in diameter, by variation in length, so as to suit the wishes of a user or the properties of a make-up product to ... | 05/08/1984 |
| 4393535 | Adjustable brush An adjustable circular brush having a variable effective working diameter comprising a brush having radially projecting flexible bristles and an annular sleeve having a diameter less than the diameter of the bristles; the sleeve being selectively, axially... | 07/19/1983 |
| 4057871 | Cleaning device for cavities preferably in chill moulds for steel ingots A cleaning device for cavities, particularly in chill moulds for steel ingots, is desired comprising a body provided with cleaning means by way of example brushes which face away from said body and are expandable away from each other in order to engage th... | 11/15/1977 |
| 3992745 | Cleaning unit for internal mechanical cleaning of containers such as moulds Cleaning the inside of a receptacle such as a chill mould by brushing the inside of the mold is effected by moving one or more brushes up and down within the mold. Each brush is generally disc-shaped and the periphery is shaped in conformity with the shap... | 11/23/1976 |