Pencil sharpener with vacuum cleaner and digital clock

Office supplies; artists and teachers materials – Office equipment not elsewhere specified – Perforating or cutting

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D10 2, D19 65, 1906

Patent

active

D04255607

REFERENCES:
patent: D132577 (1942-05-01), Hoffmann
patent: D193457 (1962-08-01), Fleming
patent: D378834 (1997-04-01), Yuen
patent: D400586 (1998-11-01), Yuen
patent: 2251053 (1941-07-01), Hoffmann
patent: 3097629 (1963-07-01), Fleming et al.

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