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| All Patents in class 425/453 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 9,047X | Aug. 20, 1835 | J. Krause, H. Hunsicker | Brick press | |
 | 19,236 | Feb. 02, 1858 | C. Carnell | Brick Machine | |
 | 295,558 | Mar. 25, 1884 | P.H. Kells | Brick-machine | |
 | 302,188 | Jul. 15, 1884 | J.H. Burgess | Lubricator | |
| 1,778,803 | Oct. 21, 1930 | L.S. Hubbert | Hydraulic Plastic Press | ||
| 1,838,532 | Dec. 29, 1931 | F.L. Creager | Apparatus for Heat Treating | ||
 | 1,849,027 | Mar. 08, 1932 | R.J. Pardee | Briquetting machine | |