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All Patents in class 470/59
Patents 1 - 10 of 10
First set of recordsLast set of records
1,172Jun. 18, 1839S.H. WillsImprovement in Machines for Cutting Screws in Wood for Framing Purposeswood threading machines
2,198Jul. 29, 1841J. ThompsonMachine for Cutting Screws on the Rails of Bedsteadswood threading machines
2,754Aug. 18, 1842C. WhippleMachine for Making Wood Screwsscrew machines
4,548May 30, 1846T.W. HarveyMaking Wood Screwsscrew machines
4,738Sep. 03, 1846T.W. HarveyMaking Wood Screwsscrew machines
5,794Sep. 19, 1848J. CrumMachine for Making Wood Screwsscrew machines
6,387Apr. 24, 1849J. Burdge, W.F. ConverseMachinery for Cutting Screws on Rails for Bedsteadswood threading machines
21,641Sep. 28, 1858H.P. Hunt, H.L. KendallImprovement in Cutting Threads of Wood-Screwsscrew machines
42,766May 17, 1864H.A. HarveyImprovement in Machines for Threading Wood-Screws
RE7,573Mar. 27, 1877H.A. HarveyMachine for Threading Wood Screws
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