Patent classifications
C
CHEMISTRY; METALLURGY
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C01
INORGANIC CHEMISTRY
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C01B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF;; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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2201/00
Preparation of ozone by electrical discharge
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C01B2201/10
Dischargers used for production of ozone
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C01B2201/14
Concentric/tubular dischargers
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