Office supplies; artists and teachers materials – Paper or pasteboard for writing or printing – Envelope
Patent
1978-01-04
1981-02-17
Word, George P.
Office supplies; artists and teachers materials
Paper or pasteboard for writing or printing
Envelope
D1901
Patent
active
D02582929
REFERENCES:
patent: 1932536 (1933-10-01), Standal et al.
patent: 2568178 (1951-09-01), Widder
patent: 2637325 (1953-05-01), McCabe
patent: 2700556 (1955-01-01), Holmwood
patent: 3107043 (1963-10-01), Jones
patent: 3508702 (1970-04-01), Kaiser
patent: 3999700 (1976-12-01), Chalmers
Hewitt Donald W.
Seibel David D.
Data Card Corporation
Word George P.
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