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Manufacturers Index - Geometric Tool Co.
Patents
This page contains information on patents issued to this manufacturer.

Submitting Patent Information

If you find a patent number or patent date by this manufacturer that is not on this list, please contact the Site Historian.


Key to Links for Patent Information

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
572,934 Dec. 08, 1896 Die Head for Screw Cutting William J. Smith New Haven, New Haven County, CT
873,441 Dec. 10, 1907 Reversing tap-holder Wilbur A. Leonard New Haven, CT
876,723 Jan. 14, 1908 Tap Holder Wilbur A. Leonard New Haven, New Haven County, CT
1,787,932 Jan. 06, 1931 Floating Tool Holder Albert F. Breitenstein New Haven, New Haven County, CT