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Kaufmann; Rainer
D-2000 Hamburg 55, DE
No. of patents:

Patent Number Title Of Patent Date Issued
5279652 Use of solids as antiblocking additives for marker liquids January 18, 1994
Solids which are soluble in a common solvent or solvent mixture, possibly containing a common high-boiling substance of common marker liquids for writing instruments with a common capillary feeder opening, with a melting point C. and a molecular weight .ltoreq.1000 dal
4487516 Printing needle apparatus December 11, 1984
In needle printing apparatus with a plurality of parallel working printing needles which are each provided with a selectively controllable blocking device and a yielding stroke equalizing element, in order to arrive at an extraordinarily compact construction each printing needle and its

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