US Patent: 1,320,878 
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| Horseshoe
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	        Patentee:
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 | George E. Lindberg (exact or similar names) - Duluth, MN |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Feb. 19, 1915 | 
 
| Granted: | 
Nov. 04, 1919 | 
 
 
 
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		  Patent Pictures:
	      
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                        Russ Allen Diamond's history 
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        Description: |  
| This patent, along with his brother-in-law's 682,506, was the foundation of the Diamond Calk company.  If you were logging in Minnesota in the winter you'd want your horses wearing these shoes.  The calks are replaceable without having to reshoe the horse. |  
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