Patents Granted on 1852-11-16


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Patents Granted on 1852-11-16
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
9,398	Nov. 16, 1852	C.L. Barnes	Expanding bit	adjustable drill bits
9,410	Nov. 16, 1852	S.P. Ruggles	Improvement in Printing-Presses	printing presses