Building block-type writing implement

Details Building block-type writing implement Building block-type writing implement

1998-10-02

2000-01-18

Holtje, Martie K.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 42, D19 49, D21484, 1906

Patent

active

D04191870

REFERENCES:
patent: D286168 (1986-10-01), Mazzoleni
patent: D290851 (1987-07-01), Yoshida
patent: 2020562 (1935-11-01), Miller
patent: 2584908 (1952-02-01), Oblinger
patent: 3846866 (1974-11-01), Burnett
patent: 4983062 (1991-01-01), Hour
patent: 5281039 (1994-01-01), Hsiung et al.
patent: 5584195 (1996-12-01), Liu

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