US Patent: 3,141,228 
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| Toolholder
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	        Patentees:
		   |  
 | William Bader (exact or similar names) - Ferndale, Oakland County , MI |  
| Robert W. Berry, Jr. (exact or similar names) - Ferndale, Oakland County , MI |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Nov. 29, 1960 | 
 
| Granted: | 
Jul. 21, 1964 | 
 
 
 
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                        Joel Havens 
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