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 |
| 7185435 | Utility knife with dual blades A utility knife that includes a pair of blades mounted on a blade holder. One blade is to be extendable from the housing of the utility knife adjacent the fore end of the utility knife with the other blade to be extendable from the housing to be usable for adjacent ... | 03/06/2007 |
| 6979153 | Deep-grooving insert having stepped cutting edge A deep-grooving chip-forming cutting insert includes a rear mounting portion, a front cutting portion, and a pair of side walls, each side wall extending along the front and rear portions. The front cutting portion includes a front end surface, a top surface, and a ... | 12/27/2005 |
| 6912941 | Steel rule die with removable cutting units A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate and a plurality of cutting units that are removably attachable to the substrate in such a manner that they are easy to adjust, remove and replace. The cutting un... | 07/05/2005 |
| 6263774 | Apparatus and method for cutting twine wound about a bale An apparatus and method for severing twine from a bale supported by one or more grapple arms and bucket of a tractor is disclosed. The apparatus comprises a slide bar mounted to at least one grapple arm, the tines, or the bucket. The slide bar has a first... | 07/24/2001 |
| 5425295 | Sheet material cutter having pivotable head A push-pull DIY cutter for sheet material, such as mat and foam board, utilizes a blade-mounting handle that is pivotable from a null position in both of two opposite directions, so as to alternatively bring into operative position a blade element spaced ... | 06/20/1995 |
| 5370025 | Motorized saw with movable blade guard actuating linkage A motorized saw comprising a base having a work piece support, and a cutting station at which a work piece is cut; a cutting unit including a motor, an arbor on which a saw blade can be removably mounted for rotation about an arbor axis driven by the moto... | 12/06/1994 |
| 5299609 | Precision adjustable router fence A positioning device is disclosed that positions and guides a nominally hand-held router or other machine tool for machining with respect to a workpiece that is used as a reference. A novel configuration is employed in which a main body holds a centrally ... | 04/05/1994 |
| 4798112 | Head assembly for mat cutting machine A mat cutting machine utilizes a trolley, which runs smoothly and stably along a shaft mounted upon the clamping bar assembly, the head assembly of the trolley including eccentric means for precisely adjusting the relationship between the cutting blade on... | 01/17/1989 |
| 4574669 | Automatic punch A power sheet punching apparatus is provided in which a reversing drive operates initially to drive punches through a stack of sheets and thereafter to reverse direction of the drive to withdraw the punches from the sheets. Should the drive be insufficien... | 03/11/1986 |
| 4548118 | Rotary cutter A rotary cutter for cutting holes of various sizes in sheet material such as self-adhesive pads. The cutter includes a base to which a cover is pivotally mounted for movement between a lowered closed position where it overlies the base and a raised open p... | 10/22/1985 |