Hole punch for a ring-binder

Details Hole punch for a ring-binder Hole punch for a ring-binder

1994-02-07

1995-01-24

Douglas, Alan P.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 32, D15128, D10 64

Patent

active

D03547701

REFERENCES:
patent: D222788 (1971-12-01), Hicok
patent: D261008 (1981-09-01), Mizejewski
patent: D303812 (1989-10-01), Sun
patent: 3944373 (1976-03-01), Farjon et al.
patent: 4729688 (1988-03-01), Manz
patent: 5340229 (1994-08-01), Schwartzmann

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