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Patents for A. L. Simpson
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberDatePatenteeTitleType
16,185Dec. 09, 1856H. OsgoodPlaning-machinewood planers
30,009Sep. 11, 1860J.W. StrangeSpring Dividerscalipers
47,597May 02, 1865W.R. CloseImprovement in hanging circular sawscircular saws
51,931Jan. 09, 1866S. DarlingInkstanddraftsman
73,956Feb. 04, 1868S. DarlingImproved Pen Cleanerdraftsman
RE2,869Feb. 18, 1868S. DarlingImprovement in the Manufacture of Metallic Squarestry squares
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