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- Manufacture of transmission apparatus for radio telephony, radio-telegraphy, whether or not incorporating reception apparatus or sound recording or reproducing apparatus; fixed transmitter and transmitter-receivers radio-telephony apparatus for transport equipment, radio telephones, ?facsimile? radiotelegraphic apparatus and so forth (10)
- Manufacture of specialized part and accessories for television and radio transmitters and apparatus for line telephony and line telegraphy, n.e.c.(manufacture of general purpose parts e.g. primary batteries, installed wires, electronic valves, integrated circuits etc. are classified in the relevant classes). (5)
- Manufacture of apparatus for line telephony including such apparatus for carriercurrent line systems (includes manufacture of telephone sets, automatic and nonautomatic switch boards and exchanges; morse or morse-type keys, other telegraphic transmitters, digital electronic exchange appartus, morse-type recorders, printer-type receivers, picture telegraphic transmitters and receivers etc.) (3)
- Manufacture of apparatus for radio broadcasting, television transmission (includes manufacture of relay transmitters and television transmitters for industrial use) (1)
- Manufacture of television cameras of all kinds (1)
- Manufacture of reception apparatus for radio-telephony or radio-telegraphy, including apparatus combined with sound recording or reproducing apparatus or a clock (1)