Benjamin Franklin announced his invention of bifocal eyeglasses.
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John B. Meyenberg from St. Louis, Missouri, patented powdered milk.
Isaac Briggs & William Longstreet was awarded a patent for the first steamboat in the US.
Micah Rugg patented a machine for dressing bolt heads.
Levi Strauss and Jacob Davis patented the first blue jeans with copper rivets.
American inventor Theophilus Van Kannel was granted the patent for the revolving door.
