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Manufacturers Index - C. O. & A. D. Porter 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
411,055 Sep. 17, 1889 Saw-tooth swage Alvin D. Porter Grand Rapids, MI
    Saw-tooth swage C. Oscar Porter Grand Rapids, MI  
882,122 Mar. 17, 1908 Cutter-guard for buzz-planers Alvin D. Porter Grand Rapids, MI Alvin D. Porter was born 1843-11-19 and died 1919-06-02.
    Cutter-guard for buzz-planers C. Oscar Porter Grand Rapids, MI