Who / when invented the yellow marker?

Pens are used for many centuries (think of ink and feathers); but who / when invented the Yellow Marker ?

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Answers

Sidney Rosenthal was a new york inventor who in 1952 was the first to incorporate the elements of a casing ( back then he used a glass casing ), ink and tip ( a simple wick unlike today's more complex material ) in to a marker - he named his invention "magic marker".

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