Writing instrument

Details Writing instrument Writing instrument

1993-10-28

1994-12-20

Thompson, Martie

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56, D19 57

Patent

active

D03536203

REFERENCES:
patent: D92704 (1934-07-01), Cromer
patent: D138032 (1944-06-01), Severy
patent: D149486 (1948-05-01), Green et al.
patent: D259574 (1981-06-01), Anderson
patent: D333677 (1993-03-01), Giralt
patent: D342091 (1993-12-01), Chen
patent: D342546 (1993-12-01), Song
patent: 794836 (1905-07-01), Ambrose
patent: 3246875 (1966-04-01), Hart

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