Writing pen

Details Writing pen Writing pen

1992-11-25

1994-03-22

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 41, D19 46, D14138

Patent

active

D03453758

REFERENCES:
patent: D229446 (1973-11-01), Dahl
patent: D298036 (1988-10-01), Watanabe
patent: D302985 (1989-08-01), Vinck
patent: D303124 (1989-08-01), Li
patent: D315890 (1991-04-01), Lewo
patent: D316730 (1991-05-01), Yoshida
patent: D317156 (1991-05-01), Van Engelen et al.
patent: D319468 (1991-08-01), Larizza
patent: D322811 (1991-01-01), Tsern
patent: 825985 (1906-07-01), De Schwertenberg
patent: 4706995 (1987-11-01), Dopp
patent: 4815880 (1989-03-01), Sekiguchi

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