Core ring for use in a mold stack

Machines not elsewhere specified – Material working – abrading – or founding machinery – Molding or casting

Design Patent

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Design Patent

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D0631073

CLAIM:
The ornamental design for a core ring for use in a mold stack, as shown and described.

REFERENCES:
patent: 2030132 (1936-02-01), Apple et al.
patent: 4521179 (1985-06-01), Gellert
patent: 4530654 (1985-07-01), Rose
patent: D359669 (1995-06-01), Splingaire
patent: D364882 (1995-12-01), Junkers
patent: 6099785 (2000-08-01), Schweigert et al.
patent: D434291 (2000-11-01), Kim
patent: 6506330 (2003-01-01), Schweigert et al.
patent: D570169 (2008-06-01), Lin
patent: 2008/0016933 (2008-01-01), Okamoto et al.
patent: 2009/0214694 (2009-08-01), Mai

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