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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25/00
Investigating or analyzing materials by the use of thermal means
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G01N25/56
by investigating moisture content
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G01N25/62
by psychrometric means, e.g. wet-and-dry bulb thermometers
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G01N25/64
using electric temperature-responsive elements
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