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| Patents for Chemetron Corp. | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,509,667 | May 05, 1970 | K.L. Lindmark | Method of grinding welded rail | track maintenance machinery | |
| 3,566,546 | Mar. 02, 1971 | K.L. Lindmark | Apparatus for grinding welded rail | track maintenance machinery | |