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Somerville, MA, US
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last 30 patents
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Patent Grant
In-situ thickness and refractive index monitoring and control syste...
Patent number
6,646,753
Issue date
Nov 11, 2003
Unaxis, USA, Inc.
Jian Zhang
G01 - MEASURING TESTING
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last 30 patents
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Patent Application
In-situ thickness and refractive index monitoring and control syste...
Publication number
20020075486
Publication date
Jun 20, 2002
Jian Zhang
G01 - MEASURING TESTING