Portable support for writing materials

Office supplies; artists and teachers materials – Office equipment not elsewhere specified – Holder or file

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D19 78, D19 91, 1902

Patent

active

D03837904

REFERENCES:
patent: D286894 (1986-11-01), Haas et al.
patent: D299475 (1989-01-01), Munnik
patent: D308227 (1990-05-01), Evenson
patent: D334213 (1993-03-01), Evenson
patent: D343865 (1994-02-01), Pohl
patent: D359399 (1995-06-01), Rath
patent: 2302568 (1942-11-01), Pitt
patent: 2636751 (1953-04-01), Carlson
patent: 2876022 (1959-03-01), Kroviak

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