Process for reducing the start-up time for a catalytic pot, by doubling it with a reactor operating with powdered CaCO3
WO0028195A1
Device and method for purifying spark ignition engine exhaust gases
FR2789119A1
PROCESS FOR THE PURIFICATION OF EXHAUST GASES FROM MOTOR VEHICLES, COMBINING THE EFFECTS OF 3-WAY CATALYSTS WITH THOSE OF SPRAYED CALCIUM CARBONATE (CaCO3)
FR2789118A1
EXHAUST GAS CLEANER FOR MOTOR VEHICLES, BASED ON CALCIUM CARBONATE (CaCO3)
FR2789117A1
Purification of exhaust gases from motor vehicles comprises chemical filtration using calcium carbonate as reacting agent
FR2789441A1
Removable and replaceable filter cartridges are used for purification of vehicle exhausts and has asbestos fibers compressed between two metallic sieves
FR2390916A1
Attachment for fixing handles to bags - has each end of handle formed with thicker parts which define single stud
