Writing instrument

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument

Patent

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Details

D19 48, D19 51, D19 56, 1906

Patent

active

D03800083

REFERENCES:
patent: D081529 (1930-08-01), Davis
patent: D093736 (1934-10-01), Riddel
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patent: D312096 (1990-11-01), Vitrac
patent: D336491 (1993-06-01), Vitrac
patent: D336658 (1993-06-01), Peersmann
patent: D337611 (1993-07-01), Peersmann
patent: D350562 (1994-09-01), Muliterno
patent: D357275 (1995-04-01), Covington et al.
patent: D358420 (1995-05-01), Tseng
patent: D361346 (1995-08-01), Johnson

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