Plunger for a pressing furnace
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United States of America Patent
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Nov 26, 2002
Issued Date -
N/A
app pub date -
Dec 21, 1999
filing date -
Nov 1, 1999
priority date (Note) -
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Abstract
A disposable plunger for use in a pressing furnace for the fabrication of dental restorations. The plunger is fabricated of a partially sintered ceramic material. The plunger is fabricated by known casting methods. The mold used for making the plunger can be supplied by a manufacturer of molds or can be easily made by using an alumina or similar plunger as a model. Laborious cleaning and grinding are not required with plungers herein described. Cracking problems that occur with prior art plungers are decreased, if not completely eliminated.
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