On March 14, 1899, U.S. Patent No. 621195 issued to Ferdinand Graf Zeppelin on a navigable balloon:

Ferdinand Graf Zeppeli was born July 8, 1838, he was a Count and general. He served as an official observer with the Union Army during the U.S Civil War, visiting the balloon camp of Thaddeus Lowe, and then made his first ascent in a balloon in St. Paul with former Army balloonist John Steiner, which was the inspiration of his later interest in aeronautics. Zeppelin’s ideas for large airships were first recorded in a March 25, 1874, diary entry.

After resigning from the Army in 1891, at the age of 52, Zeppelin devoted himself to designing an air ship. He patented the design in Germany in 1895 and in the United States in 1899. After initial succes, the name Zeppelin came to be commonly used to refer to all forms of rigid airships. Zeppelin also created the world’s first commercial airline, using his air ships.

On March 7, 1865, U.S. Patent No. 10609 issued to Charles Miller

Miller’s sewing machine which, was able to automatically make buttonholes, whip stitches, and herringbone stitches, was an improvement of his earlier patented machine (U.S. Patent No. 9139), the model of which survives in the National Museum of American History:

On March 2, 1926, U.S. Patent No. No. 1,575,263 issued to Winifred Guglielmi aka Natasha Rambova (born Winifred Shaughnessy in Salt Lake City):

Natasha was a dancer, costume designer, actress, and the second wife of silent screen movie actor RUDOLPH VALENTINO (born Rodolfo Guglielmi).

Valentino first met Rambova while filming Uncharted Seas in 1921. They become friends, and eventually a romantic relationship developed. They married on May 13, 1922, in Mexico, which resulted in Valentino’s arrest for bigamy, since he had not been divorced for a full year, as required by California law at the time. Rambova and Valentino lived separately until they were legally remarried at the Lake County Court House in Crown Point, Indiana on March 14, 1923.

On March 1, 1988, U.S. Patent No. 4,728,061 issue to Caldwell Johnson, Maxime Faget, and David Bergeron on a Spacecraft Operable in Two Alternative Flight Modes.

The patent was owned by Space Industries, Inc., which was formed by one of the co-inventors, Maxime Faget, for the purpose of building a privately owned space station called the Industrial Space Facility (ISF). Faget was a retired chief of engineering and operations at NASA. The company lobbied the United States government to be an anchor tenant in the proposed space station, and the Reagan Administration requested funding from Congress, which was never approved. The company merged with Calspan Corporation, which in turn merged with General Dynamics Corporation,