发明授权
US4164419A Powdered alloy for dental amalgam 失效
牙合金粉末合金

Powdered alloy for dental amalgam
摘要:
A dental alloy capable of combination with mercury to form a dental amalgam comprising by weight 20% and above silver, 20 to 50% tin, 9.5 to 50% copper, and 0.5% and above indium.
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