All Patents in class 209/306


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All Patents in class 209/306
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
6,982	Jan. 01, 1850	J.M. Clark	Combining Grinding and Bolting Machines	miller
76,505	Apr. 07, 1868	F. Hancock, F.B. Norton	Combined clay-grinding and separating mill
892,502	Jul. 07, 1908	J.S. Coon	Grain Cleaner and Dryer	corn dryers