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Manufacturers Index - Heinrich Co.
This page contains information on patents issued to this manufacturer.

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USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
1,647,622 Nov. 01, 1927 Metal shears Paul Kramer Racine, WI
    Metal shears Robert Heinrich Racine, WI  
1,831,447 Nov. 10, 1931 Metal cutting instrument Robert Heinrich Racine, WI "This invention relates to improvements in metal cutting instruments and more particularly to a rod cutting attachment for metal shears such as illustrated in (1,647,622).
1,971,069 Aug. 21, 1934 Vise for shapers Robert Heinrich Racine, WI
2,994,538 Aug. 01, 1961 Collet chuck having an axially stationary collet Lawrence Farnsworth Racine, WI
2,998,259 Aug. 29, 1961 Collet and chuck therefor Lawrence Farnsworth Racine, WI Improvements to patent 2,994,538.