Pen

Details Pen Pen

1991-02-11

1992-10-27

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 51, D19 56, D19 57

Patent

active

D03305651

REFERENCES:
patent: D182925 (1958-05-01), Ribas
patent: D234225 (1975-01-01), Ito
patent: D272952 (1984-03-01), Holloway
patent: D277873 (1985-03-01), Kin
patent: D283901 (1986-05-01), Horntrich
patent: D287028 (1986-12-01), Thevenot
patent: D311550 (1990-10-01), Yazaki
patent: D316109 (1991-04-01), Pappageorge
patent: D320618 (1991-10-01), Grotsch
patent: D325221 (1992-04-01), Ito

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