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Scientific American

July 1, 1946

1 min read

Helium-Shielded Arc, Lens Antenna, and more

Originated for Aircraft Welding, Now Available for General Use

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This article was originally published with the title “Helium-Shielded Arc, Lens Antenna, and more” in Scientific American Magazine Vol. 175 No. 1 (July 1946), p. 29
doi:10.1038/scientificamerican0746-29

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