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 |
| 6997140 | Tracking and marking system An identification apparatus for animals or carcasses carrying electronic identification devices, (EID) (2) moving past an antenna (10). The identification apparatus including motion sensing means (12, 13, 14, 17) and marking means (16) ad... | 02/14/2006 |
| 6716097 | Device for severing a spare rib The invention relates to a device for severing a spare rib (RR) from a backbone (R), whereby the split backbone is conveyed inside a guideway (2), which is comprised of two guide plates (21, 22) and which delimits a wedge-shaped channel (23) thr... | 04/06/2004 |
| 4688296 | Means for breaking down carcasses Means for braking down carcasses such as sheep and pigs comprising a pair of endless belt for conveying the carcass legs uppermost to a splitting saw for cutting along the backbone of the carcass, means for holding the split carcass as it moves along, and... | 08/25/1987 |
| 4557014 | Method and apparatus for processing similar workpieces of varying shape, points of contour and dimension Class workpieces, such as hog carcasses, of varying dimension, points of contour and shape are moved from storage on an overhead rail conveyer hanging vertically head down and are driven through break-up stations at a constant speed. Driven side belts mov... | 12/10/1985 |
| 4118777 | Computer directed primal cut indicating device Devices are described for automatically producing a reference indication of the position where a cut is to be made. Data supplied by a computer program causes a cut position indicator to give direction indications to the butcher with respect to each carca... | 10/03/1978 |
| 3940998 | Hog processing method A method and means for optimizing value obtainable from hog carcasses by utilizing particular hog measurements and current market values to determine cutting parameters. Ham and loin primal cuts from each carcass half are optimally produced in accordance ... | 03/02/1976 |