Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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11/00
Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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G01N11/02
by measuring flow of the material
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G01N11/04
through a restricted passage, e.g. tube, aperture
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