METHOD FOR PRECIOUS METAL PIECES OF WORK PROTECTING FROM FALSIFICATION Russian patent published in 1997 - IPC

Abstract RU 2077071 C1

FIELD: piece of work origin falsification protection technology. SUBSTANCE: four methods (variants) are proposed, first is mark-making method by holographic microrelief and macrorelief using as combined label, second one includes mark making like encoded hologram, third and fourth variants of protecting methods are microrelief mark covering by amorphous diamond-like substance. EFFECT: more reliable falsification protection method. 10 cl, 4 dwg

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RU 2 077 071 C1

Authors

Balagurov A.Ja.

Ivanov V.V.

Inkin V.N.

Putilin A.N.

Selishchev S.V.

Ukhanov S.I.

Dates

1997-04-10—Published

1996-05-14—Filed