B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
42/9
B41M 5/136 (2006.01) C09B 29/06 (2006.01)
Patent
CA 1101670
Case 1-10353/MA 1649/+ Canada AN IMAGE PRODUCING SYSTEM Abstract of the Disclosure An image producing system is provided, wherein an activator composition e.g. made up as a crayon or pencil, when contacted with paper substrate containing an azo colour former yields an image by colour change.
272478
Astbury James H.
Broadbent Barrie
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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