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File:Plasti-slate 001.jpg

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Summary

Description
English: Original early 1960's ad for "Plasti-slate" the first whiteboard/dry erase board invented by Martin Heit
Date
Source Martin Heit inventor of the whiteboard/dry erase board
Author Martin Heit inventor of the whiteboard/dry erase board

Licensing

This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.

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Captions

Advertisement for the first dry-erase / whiteboard by Martin Heit

Items portrayed in this file

depicts

17 June 2013

File history

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Date/TimeThumbnailDimensionsUserComment
current12:47, 17 June 2013Thumbnail for version as of 12:47, 17 June 20131,700 × 2,338 (739 KB)ScottmaggieUser created page with UploadWizard

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