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Patents for Blacker Engineering Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,054,332	Feb. 25, 1913	W. Blacker	Mechanical or Power Actuated Hammer
	1,297,990	Mar. 25, 1919	W. Blacker	Treadle Hammer
	1,349,939	Aug. 17, 1920	W. Blacker	Mechanical or Power Actuated Hammer

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