| US Patent: 3,566,546 
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| Apparatus for grinding welded rail | 
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| Patentee: |  |
 | Karl L. Lindmark (exact or similar names) - Rockford, IL |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Nov. 21, 1966 |  
| Granted: | Mar. 02, 1971 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for Fenlind Engineering Co.; Rock Mill, Inc.
 
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| Description: |  | The inventor had co-founded milling machine maker Fenlind, Inc. This patent implies that Lindmark had left Fenlind by 1966. See also patent 3,509,667, which was part of the original 1966 patent application. |  |