Happy Spring! And Happy Zipper Patent Day! Gideon Sundback (1880-1954), a Swedish-American electrical engineer, is most commonly associated with his work in the development of the zipper. He received a patent for the "separable fastener" on 20 March 1917. My striped tie is special because it is zippered, not tied! Today is Sweater Day, and "Won't You Be My Neighbor Day," honoring the birthday of Fred Rogers (1928-2003).
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