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EP0012783A1
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Sampling of fluids
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Tempering of glass lenses - with rapid oil quench at end of heating cycle
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Method for improving the chemical durability of opal glasses
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Method and apparatus for forming blanks in optical-quality homogeneous glass
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A distillation column
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Process and apparatus for the measurement of colour
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A tube coupling
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Method and device for testing and calibrating color tones
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Screen printing on glass or ceramics
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