Metal working – Method of mechanical manufacture – Jewelry or locket making
Reexamination Certificate
2010-07-27
2011-11-22
Chang, Richard (Department: 3726)
Metal working
Method of mechanical manufacture
Jewelry or locket making
C029S896400, C029S896410, C063S015000, C419S015000
Reexamination Certificate
active
08061033
ABSTRACT:
Methods of making tungsten carbide-based annular jewelry rings including sinterable metal and/or ceramic powder materials compressed into a predetermined configuration and then sintered to form an annular jewelry ring to which softer precious metals, stones, crystals or other materials suitable for use in jewelry may be affixed. Such items of jewelry may have multiple facets and can be fabricated using various disclosed techniques and various combinations of materials.
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Kennametal
Chang Richard
Felder Scott A.
Wiley & Rein LLP
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