Supporting plate for affixing paper sheets

Details Supporting plate for affixing paper sheets Supporting plate for affixing paper sheets

1988-11-23

1992-05-19

Walsh, Donald P.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Holder or file

D19 86, D19 90

Patent

active

D03262804

REFERENCES:
patent: D241786 (1976-10-01), Berson
patent: D254794 (1980-04-01), Hayman et al.
patent: D262381 (1981-12-01), Greenlees
patent: D283141 (1986-03-01), Koves
patent: D311930 (1990-11-01), Groswith, III et al.
patent: D312476 (1990-11-01), Westendorff
patent: 2302568 (1942-11-01), Pitt
patent: 2363355 (1944-11-01), Pitt
patent: 3167329 (1965-01-01), Ernst
patent: 3419012 (1968-12-01), Stoddard
patent: 3465462 (1969-09-01), Arnt-Jensen

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