CPC B64C2700/62

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Enclosing categories CPC B64C2700/00
Subcategories CPC B64C2700/6246, CPC B64C2700/6295
Start year
End year

CPC category B64C2700/62 is for "codes corresponding to the former IdT classification of class 62."[1]

PBM: I don't know what that means ; let's clarify it when we can.