Lock system preventing mixing of different kinds of oil at gasoline stand
GB8406296D0
Lock system preventing mixing of different kinds of oil at gasoline stand
FR2523261A1
Structure for prevention of mixing of different kinds of oils - includes male coupling member with guide ring positionable for selective engagement with one of female coupling members
US4444419A
Structure for prevention of mixing of different kinds of oils for oil-feeding couplings
GB2116274A
Prevention of accidental mixing of different kinds of oils
US4418340A
Liquid level indicator in a cylindrical gasoline tank of the horizontal type
FR2503359A1
Level indicator for horizontal cylindrical tank
GB1279288A
Device for measuring the quantity of liquid passing within a conduit
