Assignee

LARIDON URBAIN LEOPOLD

1 granted patent·24 citations·filing 1975–1975

Technology mixG03C1 Y10S1

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1 record

0165US3980480APhotographic recording and reproduction of information photochromic composition containing polyhalogenated hydrocarbon, spiropyran compound and heterocyclic mercapto compound and the use thereofLARIDON URBAIN LEOPOLD·Filed 1975·Granted Sep 14, 1976·24 cites·23 claims

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