The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 7367867 | Two-side working machine A two-side working machine, comprising an upper and a lower working disc which hold on, and are fixed to, an upper and a lower carrier disc, and which are disposed coaxially with each other and are adapted to be rotationally driven relative to each other by a workin... | 05/06/2008 |
| 5205077 | Apparatus for controlling operation of a lapping, honing or polishing machine An apparatus for controlling operation of a lapping, honing or polishing machine comprising at least one working disk having an abrasive means for honing, lapping, or polishing the surface of a work-piece and adapted to be driven by a variable working dis... | 04/27/1993 |
| 5067203 | Card clothing A card clothing for a yarn carder flat has a card fillet and tooth members with tooth shanks projecting from the fillet and the connector between tooth shanks perpendicular to a travel direction of the fiber. According to the invention the relatively larg... | 11/26/1991 |
| 5008979 | Textile-fiber treating grooved roller and a wire with teeth having a foot portion indented for force-fitting the wire into the groove and method of making same A roller for the treatment of fiber masses for the textile industry has a sawtooth wire received in a rectangular cross section helical groove of a steel roll body and indented by a peening or indenting roller to provide, by plastic deformation of the foo... | 04/23/1991 |
| 4962616 | Method and device for controlling the operation of honing machines Method for controlling the operation of two-wheel housing machines, the machining wheels of which are pressed towards each other and onto the workpieces by means of a loading device at a predetermined variable loading pressure, wherein during operation th... | 10/16/1990 |