US Patent: 2,816,487 
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| Milling Machine
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	        Patentees:
		   |  
 | Joseph B. Armitage (exact or similar names) - Wauwatosa, Milwaukee County, WI |  
| Harold L. Heywood (exact or similar names) - West Allis, Milwaukee County, WI |  
| John L. Martin (exact or similar names) - West Allis, Milwaukee County, WI |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Sep. 16, 1949 | 
 
| Granted: | 
Dec. 17, 1957 | 
 
 
 
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                        Joel Havens "Vintage Machinery" entry for Kearney & Trecker Co. 
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