Coffee filter ring

Compound tools – Cutter combined with other tool or tools

Design Patent

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Details

Design Patent

active

D0618502

CLAIM:
The ornamental design for a coffee filter ring, as shown and described.

REFERENCES:
patent: 972531 (1910-10-01), Haynes
patent: 4319758 (1982-03-01), Nicholson
patent: 4656932 (1987-04-01), Kopp
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patent: 5252211 (1993-10-01), Searfoss, Jr.
patent: D341059 (1993-11-01), Watson
patent: D349833 (1994-08-01), Enos
patent: 5888392 (1999-03-01), Frizell
patent: D426425 (2000-06-01), Hermanski
patent: D563156 (2008-03-01), Goodman et al.
patent: D598710 (2009-08-01), Griffith
patent: D608189 (2010-01-01), Jackson et al.

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