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Inventor
CARRIER LEE A
2 patents
Patents
2 patents
US4273362A
Jun 16, 1981
Information-bearing article for conveying information which cannot be surreptitiously detected
LUDLOW CORP
64 citations
90
US4120445A
Oct 17, 1978
Information-bearing article for conveying information which cannot be surreptitiously detected
LUDLOW CORP
56 citations
90