paper-based information tool / electric incandescent lamps semiconductor devices / Internet version / chemical formulae / main / i.e. devices / structural chemical formulae / published patent applications / search tool / search purposes / i . e .ii . e ..i . e .ei . e ..i . e . i . e .di . e .ei . e .vi . e .ii . e .ci . e .ei . e .si . e . / /
MarketIndex
IPC / /
Organization
World Intellectual Property Organization / IPC Union / United Nations / /