Patents for John Ackerman


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Patents for John Ackerman
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	274,099	Mar. 20, 1883	J. Ackerman, A.O. Mitchell, F.M. Underwood	Saw-mill dog
	303,967	Aug. 26, 1884	J. Ackerman	Saw-mill dog
	365,661	Jun. 28, 1887	J. Ackerman, J.C. Blair	Saw-mill dog