156 



COLTERS. 



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K. W. MANWAEING. 

 Colter. 



No. 220,161. 



Patented Sept. 30, 187?. 



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H, h J, OLDENDORPH. 

 Colter Attaclimont for Plows 



No. 220,650. 



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R. GRAVES. 

 Jointer for Plow. 



No. 221,053. Patented Oct. 28, 1879. 



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Patented Oct, I4. 1879. 



FIGl, 



ATTEST, 



IIWENTDHS 





H. E. WISNER. 

 Combined Jointer and Cutter. 



No. 222,113. 



Patented Nov. 25, 1879. 



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