CPC Subgroup Additional Only
H04N 2201/0003 Method used
Full Title
Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof > Diagnosis, testing or measuring; Detecting, analysis or monitoring not otherwise provided for > Method used
1 direct subcode
Child Classifications
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- H04N 2201/0005 using a reference pattern designed for the purpose, e.g. a test chart