Writing instrument

Details Writing instrument Writing instrument

1992-05-21

1993-11-09

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 49

Patent

active

D03411613

REFERENCES:
patent: D6229 (1872-10-01), Johnson
patent: D28558 (1898-05-01), Goldsmith
patent: D58694 (1921-08-01), Warthy
patent: D91976 (1934-04-01), Deli
patent: D114791 (1939-05-01), Lusareta
patent: D153891 (1949-05-01), Meno
patent: D194522 (1963-02-01), Allegretti
patent: D195924 (1963-08-01), Perlmutter
patent: D286646 (1986-11-01), Mori
patent: D290265 (1987-06-01), Holznecht et al.

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