Patents for Douglass Mfg. Co.


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Patents for Douglass Mfg. Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	27,946	Apr. 17, 1860	J. Blake	Auger
	76,956	Apr. 21, 1868	J. Swan	Improvement in auger-handles
	106,919	Aug. 30, 1870	A.F. Cushman	Improvement in Hollow Augers