Albert Whetstone

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Albert L. Whetstone was a lead inventor at Science Accesories and then Summagraphics.

He invented Graf/Pen.

He left Summagraphics in about 1981.^[1]

References[edit]

↑ "EXECUTIVE CHANGES". 1981-11-19. https://www.nytimes.com/1981/11/19/business/executive-changes-098839.html.

"Electronic Design Vol. 23 No. 3". p. 80. https://www.worldradiohistory.com/Archive-Electronic-Design/1975/Electronic-Design-V23-N03-1975-0201.pdf.

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