Writing pen

Details Writing pen Writing pen

1984-06-19

1986-10-14

Word, George P.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 57

Patent

active

D02861640

REFERENCES:
patent: D57397 (1921-03-01), Taussig
patent: D142391 (1945-09-01), Stempel
patent: D143508 (1946-01-01), Reynolds
patent: D146016 (1946-12-01), Campbell et al.
patent: D175864 (1955-10-01), Steinberg
patent: D256136 (1980-07-01), Muller
patent: D265212 (1982-06-01), Speigel
patent: D268935 (1983-05-01), Horntrich
patent: D269189 (1983-05-01), Sakaoka
patent: D269445 (1983-06-01), Kruckel et al.
Das rotring Zeichengerate-System (Catalog 981913) 3/81, pp. 12-13.

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