All Patents in class 91/216B


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All Patents in class 91/216B
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	182,196	Sep. 12, 1876	L. Huntoon	Improvement in compound steam-engines
	187,092	Feb. 06, 1877	R.D. Bradley	Gas-Engine
	605,544	Jun. 14, 1898	R.J. Good	Drop Hammer
	1,534,301	Apr. 21, 1925	P. Conradson	Grinding Machine