Marking instrument including liquid ink

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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Details

260DIG38, 401141, 401142, 401198, 401209, 524509, 524516, 524542, 106 3113, 106 3127, 106 3128, C09D 1118

Patent

active

060750707

ABSTRACT:
A marking instrument includes a non-erasable ink including a colorant and a solvent having a water content of about 0-15% by weight and a viscosity of about 15 to 4,500 cps.

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British Provisional Specification No, 812,704, Marks & Clerk, Apr. 15, 1957 .

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