CPC Subgroup Additional Only
F25J 2290/44 Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface
Full Title
Other details not covered by groups F25J2200/00 - F25J2280/00 > Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface