On March 1, 1921, U.S. Patent No. 1,370,316 issued to magician and escape artist Harry Houdini on a Diver’s Suit.

On February 29, 1916, Maria Montessori was issued U.S. Patent No. 1, 173,298 on a Cut-Out Geometrical Figure for Didactical Purposes.

On February 28, 1995, Mark Xitco, John Gory, Kerry Perkins, Marshall Monroe, and William Redmann were issued U.S. Patent No. 5,392,735 on Marine Mammal Communication Device.

On February 27, 1900, U.S. Patent No. 644,077 issued to Felix Hoffmann on Acetyl Salicyclic Acid (aspirin).

On February 26, 1896, U.S. Patent No. 534,840 issued to Michael Joseph Owens on a glass making machine.

On February 25, 1902, J. P Holland received U.S. Patent No. 694,154 on a Submarine Boat or Vessel.

On February 24, 1839, U.S. Patent No. 1,089 issued to William S. Otis on a Crane-Excavator for Excavating and Removing Earth (a steam shovel).

On February 23, 1869, U.S. Patent No. 87,227 issued to Frederick Walton on Improvements in the Manufacture of Floor-Cloths and Similar Fabrics, and in Slabs for Pavements (linoleum).

On February 22, 1916, U.S. Patent No. 1,173,079 issued to E.F.W. Alexanderson on Selective Tuning System.

On February 21, 1865, U.S. Patent No. 46,454 issued to John Deere on a Plow: