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| Patents for Carborundum Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,835,083 | May 20, 1958 | L.G. Brown, G. De Mambro | Belt sanding machine | |
 | 3,364,626 | Jan. 23, 1968 | W.C. Keyes | Belt sanding and polishing machines | |
 | 3,400,493 | Sep. 10, 1968 | W.C. Keyes | Belt sanding and polishing machine | |
 | 3,408,775 | Nov. 05, 1968 | R.D. Rutt | Belt sanding and polishing machine | |
 | 3,529,384 | Sep. 22, 1970 | F.M. Owrey | Sanding machine | |
 | 3,570,190 | Mar. 16, 1971 | R.D. Rutt | Belt sanding and polishing machine | |