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Tag: April 23

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3 matches

Things Pathfinder-tagged with 'April 23'

Sort Results	Type		Title / Forum	Create Date
		April 23, 1940: Batteries Included, and They Don't Leak from Engineering News posted in General Discussion Pathfinder Tags: April 23	Created on 04/23/2012 9:14 AM
		Granville T. Woods: The Black Edison from Great Engineers & Scientists posted in CR4, General Discussion Pathfinder Tags: April 23 black engineers Black History Month black inventors January 30 ...	Created on 02/19/2010 9:30 AM by Steve Melito
		April 23, 1867 – Zoetrope is patented. PLUS Julie makes her own! from "On This Day" In Engineering History posted in General Discussion Pathfinder Tags: animation April 23 zoetrope	Created on 04/23/2007 9:43 AM by julie

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