What famous events happened in March?

march 1

1921 harry houdini granted patent #1,370,316 "diver's suit"
march 2

1861 patent act of 1861 increased term of patent grant 14 17 years, 20 years.
march 3

1821 thomas jennings received patent "dry scouring of clothes". first african-american inventor receive u.s. patent.
march 4

1955 first radio facsimile or fax transmission sent across continent.
1997 leonard kasday received patent in way handle telephone prize opportunities
march 5

1872 george westinghouse, jr patented steam air brake.
1963 arthur k. melin received u.s. patent number 3,079,728 on march 5, 1963 hoop toy aka hula-hoop.
march 6

1899 felix hoffmann patented "aspirin". hoffmann discovered compound called salicin found in willow plants provided pain relief.
1990 mel evenson received design patent ornamental design paperclip holder
march 7

1876 alexander graham bell granted patent in telephone.
march 8

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