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Utility Wrench Company (New York, NY) - Incorporated June 27, 1885
Henry W. Atwater Patent #206,851 - Improvement in Clamps
Henry W. Atwater Patent #284,162 - Wrench
Example of a Utility Patent #206,851 wrench from The Wrenching News 2017 York auction listing.
Article about their wrench from the August 1886 edition of Building and Carpentry.
Scientific American Bar Steel Version advertisement from December of 1887.