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 |
| 5921698 | Mount for panel-shaped components The invention concerns a mount for panel-shaped components, in particular glass panels, with a base element that penetrates through an opening in the panel-shaped component and immobilize it, and a ball stud that has at its first end a ball element which ... | 07/13/1999 |
| 5701704 | Dock device, particularly for maintaining and overhauling aircraft Dock device (10), particularly for maintaining and overhauling commercial aircraft, having at least two lateral dock parts (28, 29) which are each connected by a suspension device (24, 25) to a supporting framework (23) so as to form a portal which is dis... | 12/30/1997 |
| 5382771 | Method for manufacturing galvanized bar segments, in particular for latticeworks or three-dimensional frameworks To render more economical the manufacture of galvanized bar segments 10 illustratively used for three-dimensional frameworks, the components of the bar segments 10, namely the hollow bar 11 and the end pieces 12, are galvanized before being assembled. The... | 01/17/1995 |
| 5271685 | Screw connection between rods and joint members of a three-dimensional space framework or the like A connection assembly having a rod, a joint member with a threaded bore therein, a tapered end piece with a recessed axial through-hole therein, and a set screw received in the through-hole and having a threaded screw end which extends out from one end of... | 12/21/1993 |
| 5155952 | Glazing profile strip for solid glazing or filler elements on the outer faces of buildings A glazing profile strip (1) which has a foot (9) with a toothing (10) for anchoring the strip (1) on a spacer (2) connected to the structure (4) of the building, has a slot (11) in that foot (9). This slot initiates at the outside (12) of the two sealing ... | 10/20/1992 |
| 5074089 | Sealing device for facades and/or roofs The sealing device serves for tightly sealing the gap (6) between adjacent elements (1) of the inclined facade or roof against the access of water, by forming several sealing planes (A--A, B--B, C--C, D--D). To this effect a network of sealing pieces is c... | 12/24/1991 |
| 4642962 | Device for sealed attachment of flexible cover strips for single- or double-curve roof surfaces of buildings A device for sealed attachment of substantially flat-surfaced cover strips, especially of sheet metal, for single- or double-curve roof surfaces of buildings, with top and bottom clamping members, which can be braced for the side attachment of adjacent co... | 02/17/1987 |
| 4475841 | Intersection joint for wooden members of trusses particularly for spaceframes An intersection joint for wooden members of trusses, particularly in spaceframes, with fixing elements for thread bolts attached on the ends of the wooden members, which are screwed into tapholes of joint elements. The fixing elements are configured as pr... | 10/09/1984 |
| 4444523 | Device for connecting plates and/or rods A device for connecting plates and/or rods of the light construction type made of wood, plastic or the like, with junction pieces having a plurality of threaded holes whose axes intersect at the center of each junction piece. Tap bolts are disposed in the... | 04/24/1984 |