Solymon Merrick patented the wrench tool.
Source
The first printing of the Gutenberg Bible was completed.
The UK approved the first American patent.
The plastic shirt collar was patented in the US by Walter Hunt.
Isaac Briggs & William Longstreet was awarded a patent for the first steamboat in the US.
The Wright Brothers were granted a patent for their 'flying machine' after applying for it three years earlier.
