B63J - Auxiliaries on vessels

More topics under "B63J - Auxiliaries on vessels" (3,127)
B63J 1 - Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water (172)
B63J 2 - Arrangements of ventilation, heating, cooling, or air-conditioning (1,125)
B63J 3 - Driving of auxiliaries (676)
B63J 4 - Arrangements of installations for treating waste-water or sewage (397)
B63J 99 - Subject matter not provided for in other groups of this subclass (757)