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US4207469A
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Analysis of emulsions and suspensions
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IE770222L
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Analysis of emulsions and suspensions
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Adjustable-spring attenuator for radiated beams
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GB1438631A
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Analysis of emulsions and suspensions
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Telescope mountings
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Instruments for analysing substances by determining their radiation absorption characteristics
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Catadioptric optical systems
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Evaporation sources for depositing thin films
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Astronomical telescopes
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FR1542820A
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Improvements made to devices for homogenizing emulsions and suspensions or their mixtures
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FR1492123A
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Reflective organ for optical instrument
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Optical interferometers
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Improvements in and relating to monochromators
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Improvements in and relating to grating monochromators
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FR1449417A
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Double beam spectrometer
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Improvements in and relating to optical interferometers
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Improvements in and relating to the analysis of gases
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Improvements in and relating to devices for imparting linear motion to bodies
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GB1068389A
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Improvements in and relating to optical systems of the schmidt type
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GB1056566A
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Optical interferometers
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