Combined vertically-mountable pencil sharpener and holder

Details Combined vertically-mountable pencil sharpener and holder Combined vertically-mountable pencil sharpener and holder

1990-11-16

1993-03-09

Holtje, Nelson C.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Perforating or cutting

D19 75, D19 85

Patent

active

D03338398

REFERENCES:
patent: D143532 (1946-01-01), Hoffman
patent: D173896 (1955-01-01), Crea
patent: D223704 (1972-05-01), Cheladze
patent: D238945 (1976-02-01), Macowski
patent: D251977 (1979-05-01), Leuenberger et al.
patent: 370940 (1887-10-01), Gay
patent: 480547 (1892-08-01), Battelle
patent: 1494988 (1924-05-01), Boyd
patent: 2504194 (1950-04-01), Harrington
patent: 2895452 (1959-07-01), Angeloff

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