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PL398349A1
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Method for measure surface characteristics and a device for measuring the surface characteristics
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Device measuring the roughness and reflectance of very smooth surfaces
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Surface roughness meter
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Method of shaping of any profile of optical insert and device to shape any profile of optical insert
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Surface roughness measuring method and apparatus therefor
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Laser beam three-dimensional filter
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PL315854A1
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Method of measuring supression of laser radiation in gaseous media and apparatus employing that method
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DE1774356A1
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Process for the production of multi-track, single or multi-column magnetic heads, in particular intended for digital input and output
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GB1184823A
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Method of Producing Multi-Track, Single or Multi-Gap, Ferritic Magnetic Reproducing and Recording Heads
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