DIFF Subgroup
F17C 13/123 Full Title
Details of vessels or of the filling or discharging of vessels > Arrangements or mounting of devices for preventing or minimising the effect of explosion (flame traps A62C4/00 )
F17C 13/123 Details of vessels or of the filling or discharging of vessels > Arrangements or mounting of devices for preventing or minimising the effect of explosion (flame traps A62C4/00 )