File card punch

Details File card punch File card punch

1986-10-06

1989-10-03

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 65

Patent

active

D03038122

REFERENCES:
patent: D152283 (1949-01-01), Misson
patent: D167521 (1952-08-01), Marauo
patent: D289776 (1987-05-01), Goertz et al.
patent: D289883 (1987-05-01), Penaluna
patent: 3303564 (1967-02-01), Hendricks
patent: 3859726 (1975-01-01), Mitsumari
patent: 3906633 (1975-09-01), Inoue

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