Electric punch

Details Electric punch Electric punch

1989-06-20

1991-11-26

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 65, D 8 98

Patent

active

D03219070

REFERENCES:
patent: D289776 (1987-05-01), Goertz et al.
patent: D303812 (1989-10-01), Sun
patent: D309916 (1990-08-01), Higashi
patent: D312660 (1990-12-01), Bowles, Jr.
patent: 3859726 (1975-01-01), Mitsunari
patent: 4288018 (1981-09-01), Taniguchi
patent: 4594927 (1986-06-01), Mori

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