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A combination between a whiteboard and a cork bulletin board Original early 1960s ad for "Plasti-slate", the first whiteboard/dry erase board invented by Martin Heit. It has been widely reported that Korean War veteran and photographer Martin Heit and Albert Stallion, an employee at Alliance, a leading flat rolled steel sheet supplier should be credited with the invention of the whiteboard in ...
Easel painting is a term in art history for the type of midsize painting that would have been painted on an easel, as opposed to a fresco wall painting, a large altarpiece or other piece that would have been painted resting on a floor, a small cabinet painting, or a miniature created while sitting at a desk, though perhaps also on an angled ...
The Magic Slate consists of a piece of rigid cardboard the size of a small clipboard that is covered with dark waxed paper on one side, a sheet of translucent plastic film that covers the waxed paper and is affixed to the top of the board, and a blunt stylus made of wood or plastic. When writing or drawing on the plastic film with the stylus ...
1900: The company begins producing slate school pencils in its newly opened Easton, Pennsylvania mill. [5]Their carbon black wins the Gold Medal at the Paris Exposition.; 1902: "Binney & Smith Company" is formed September 30, in Easton, Pennsylvania, and serves as general distributor for several carbon black producers, introducing Carbon black to other countries.
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