Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F24
HEATING; RANGES; VENTILATING
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F24T
GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
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F24T10/10
with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
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F24T10/13
using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
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F24T10/15
using bent tubes; using tubes assembled with connectors or with return headers
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