Template:Selected anniversaries/September 23: Difference between revisions

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||1919: Ernst Heinrich Bruns dies ... German mathematician and astronomer, who also contributed to the development of the field of theoretical geodesy. Pic.
||1919: Ernst Heinrich Bruns dies ... German mathematician and astronomer, who also contributed to the development of the field of theoretical geodesy. Pic.
||1925: Engineer and inventor George Laurer born. He held 25 patents and developed the Universal Product Code (UPC) in 1973. He devised the coding and pattern used for the UPC, based on Joe Woodland's more general idea for barcodes. Pic.


||1926: André Cassagnes born ... toy maker, created the Etch A Sketch. Pic search: https://www.google.com/search?q=Andr%C3%A9+Cassagnes
||1926: André Cassagnes born ... toy maker, created the Etch A Sketch. Pic search: https://www.google.com/search?q=Andr%C3%A9+Cassagnes

Revision as of 06:08, 11 December 2019