US Patent: 4,164,810 
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| Automatic Tool Changer for Machine Tools
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	        Patentees:
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 | Charles B. Sipek (exact or similar names) - Hales Corners, Milwaukee County, WI |  
| Richard Johnstone (exact or similar names) - Brookfield, Waukesha County, WI |  
| Russell B. Clegg (exact or similar names) - Milwaukee, Milwaukee County, WI |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Dec. 15, 1977 | 
 
| Granted: | 
Aug. 21, 1979 | 
 
 
 
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                        Joel Havens "Vintage Machinery" entry for Kearney  Trecker Corp. 
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