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Patents for Lyman H. Essex
Patents 1 - 4 of 4
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
250,464Dec. 06, 1881J. ThomsonDifferential screw
256,867Apr. 25, 1882J. ThomsonImproved Monkey Wrench
259,603Jun. 13, 1882J. ThomsonBench Vise
292,874Feb. 05, 1884J. ThomsonBench Vise
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