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