Combination pen and knife

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Plural or combined

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Details

D8105, D19 49, 1906

Patent

active

D03971473

REFERENCES:
patent: D138875 (1944-09-01), Weiss
patent: D152847 (1949-02-01), Weiss
patent: D155561 (1949-10-01), Weiss
patent: D155613 (1949-10-01), Kahn
patent: D163606 (1951-06-01), Horwitch
patent: 181179 (1876-08-01), Johnson
patent: D188266 (1960-06-01), Buhn et al.
patent: 294756 (1884-03-01), Brown
patent: D378762 (1997-04-01), Kikuchi et al.
patent: 3228378 (1966-01-01), Rohrmuller

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