-
-
-
-
-
Monitoring of covert marks
-
Patent number 6,100,967
-
Issue date Aug 8, 2000
-
SLS Biophile Limited
-
Richard Mark Farrer
-
B44 - DECORATIVE ARTS
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3895132
-
Patent number 3,895,132
-
Issue date Jul 15, 1975
-
B44 - DECORATIVE ARTS
-
3428101
-
Patent number 3,428,101
-
Issue date Feb 18, 1969
-
B44 - DECORATIVE ARTS
-
3144760
-
Patent number 3,144,760
-
Issue date Aug 18, 1964
-
B44 - DECORATIVE ARTS