Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument
Patent
1984-06-19
1987-01-06
Word, George P.
Office supplies; artists and teachers materials
Equipment for writing, drawing, or for fine arts
Marking instrument
D19 51
Patent
active
D02876035
REFERENCES:
patent: D57397 (1921-03-01), Taussig
patent: D142391 (1945-09-01), Stempel
patent: D146016 (1946-12-01), Campbell et al.
patent: D175864 (1955-10-01), Steinberg
patent: D226338 (1973-02-01), Tailer
patent: D256136 (1980-07-01), Muller
patent: D259792 (1981-07-01), Itoh et al.
patent: D265212 (1982-06-01), Speigel
patent: D269445 (1983-06-01), Kruckel et al.
Das rotring Zeichengerate-System (catalog 981913) 3/81, pp. 12-13.
Koh-I-Noor Rapidograph, Inc.
Olsen Warren E.
Semmes David H.
Word George P.
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