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Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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9/00
Measuring instruments characterised by the use of optical techniques
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G01B9/02
Interferometers
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G01B9/02034
characterised by particularly shaped beams or wavefronts
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G01B9/02038
Shaping the wavefront, e.g. generating a spherical wavefront
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G01B9/02039
by matching the wavefront with a particular object surface shape
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