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Scientific American

November 1, 1942

1 min read

Marking Machine, Safety Solvent, and more

Uses Acid Dye to Make Permanent Mark

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This article was originally published with the title “Marking Machine, Safety Solvent, and more” in Scientific American Magazine Vol. 167 No. 5 (November 1942), p. 228
doi:10.1038/scientificamerican1142-228

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