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Some states (roughly east to west: NH, CT, NY, OH, MI, IL) had makers of composite clamps. Listed below, in alphabetic order, are links to further information for each firm.
Use the navigation table at the end of the page for more information.
Makers of Jorgensen brand
History under investigation.
Makers of Hargrave brand
Pat'd Apr 8-1884
This firm took over Reno Vise Company
Pat'd Apr 8-1884
This firm was taken over by Detroit Machine Screw Works
makers of DOSCH Speedclamp
Pat'd. April 8, 1913
This major section discusses:
There are some troublesome cases:
Craftsman can be considered a brand of Sears, but they may also have been makers
at one time.
Hargrave was initially one brand of Cincinatti Tool, but later became the company
name.
This section presents pictures of the various clamps that were made, sold, or used by known firms, and by some individuals. There are some standard, or default, pictures I try to get:
last revised and validated
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