Double-edged knife blade

Compound tools – Cutter combined with other tool or tools

Design Patent

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Design Patent

active

D0447014

CLAIM:
The ornamental design for a double-edged knife blade, as shown.

REFERENCES:
patent: D. 31716 (1899-10-01), Bolton
patent: D. 121363 (1940-07-01), Bryant, Sr.
patent: 127187 (1872-05-01), Peabody
patent: D. 155087 (1949-09-01), Gordenier
patent: D. 166880 (1952-05-01), Ruppe
patent: D. 214470 (1969-06-01), Laughlin
patent: D. 275065 (1984-08-01), Steiner
patent: D. 292867 (1987-11-01), Holterscheidt
patent: D. 294861 (1988-03-01), Detsch
patent: 2011910 (1935-08-01), Robbins
patent: 2293286 (1942-08-01), Fenner
patent: 3205575 (1965-09-01), Senkewitz
patent: 5572794 (1996-11-01), Kalbern

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