Patents for Henry C. Knowlton


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Patents for Henry C. Knowlton
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	177,018	May 02, 1876	O. Sawyer, A. Knowlton, H.C. Knowlton	Improvement in sanding-machines
	327,203	Sep. 29, 1885	C.D. Smith	Planer for small curved pieces
	328,966	Oct. 27, 1885	L.G. McKnight, H.C. Knowlton	Boring-machine
	341,149	May 04, 1886	H.C. Knowlton	Cutter-head