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Classifying apparatus and method patent drawing, 1952
US 2,612,994Classifying apparatus and method1952

PD-70 · US 2,612,994

Classifying apparatus and method

Woodland and Silver's 1952 bullseye barcode — sketched in beach sand, now scanned five billion times a day.

Inventor
Norman J. Woodland & Bernard Silver
Patented
October 7, 1952

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PD-70 · US 2,612,994 · Filed October 20, 1949 ·

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Is this a real patent?
Yes — the original drawing as filed at the U.S. Patent Office, cleaned and printed. Public domain by law.
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Printed in Europe on 200 g/m² matte paper. Small sizes ship flat, 50 × 70 ships rolled in a tube. Tracking by email.
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