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1932 - thyratron bean sorting machine

THYRATRON BEAN SORTING MACHINES

E&MP 94.026

Photo Electric Cells

February 8, 1932

G-E photoelectric-thyratron bean sorting machines [at the] Electric Sorting Machine Co., Lowell, Mich

PHOTO 478355 E369 E327.6

Original Caption by Science Service
©General Electric co. - Publicity Department



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