Cap for writing instruments

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Element or attachment

Patent

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Details

D19 49, D19 51, 1906

Patent

active

D04023129

REFERENCES:
patent: D248865 (1978-08-01), Sussman et al.
patent: D310684 (1990-09-01), Itoh
patent: D317324 (1991-06-01), Chuang
patent: D322629 (1991-12-01), Hayes
patent: D340069 (1993-10-01), Garry
patent: D340476 (1993-10-01), Hiromori
patent: D351417 (1994-10-01), Oka
patent: D359759 (1995-06-01), Otake
patent: 5066156 (1991-11-01), Petrillo et al.

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