inorganic compounds of OSMIUM

clarifying non-alcoholic beverages by OSMOSIS

electro- OSMOSIS

investigating OSMOSIS

OTTER boards for trawling

connectors forming electric OUTLETS

OUTLETS for gas, liquid or other fluent material, in general

OUTPUT for analogue computers

OUTPUT for electric digital computers

OUTPUT for mechanical digital computers

coke OVENS

cooking- OVENS

electric heating elements for OVENS

implements for use with cooking OVENS

travelling OVENS

OVERFLOWS [= spillways]

OVERFLOWS devices for basins or baths

OVERFLOWS devices for gullies

installing electric OVERHEAD lines

OVERHEAD power lines for electric vehicles

printers' OVERLAYS

quilts or OVERLAYS for beds

circuits in general for protecting against OVERLOAD

electric devices in general for protecting against OVERLOAD

preventing OVERLOAD in lifting or hauling

preventing OVERLOAD of cranes

protecting of capacitors against OVERLOAD

protecting against OVERLOAD in electric measuring instruments

preventing OVERSTRAIN between agricultural tools and carriers

preventing OVERSTRAIN between tractor and agricultural machine

preventing OVERSTRAIN in couplings in general

preventing OVERSTRAIN in vehicle connections in general

preventing OVERTHROW in mechanical counters

circuits for protecting apparatus against OVER-VOLTAGE

resistors for protecting against OVER-VOLTAGE

preventing OVER-WINDING in clocks wound electrically

preventing OVER-WINDING of lifts

preventing OVER-WINDING in mechanical clocks

OXALIC acid

preparation of OXALIC acid

OXAZINE(S) dyes

OXAZINE(S) or derivatives thereof

OXAZOLE or derivatives thereof

OXEPINE or derivatives thereof

OXETANE or derivatives thereof

OXIDATION of organic compounds in general

preventing OXIDATION

general methods of preparing OXIDES

imitations of metal OXIDES surfaces

OXIDIZING by anodising

OXO CARBOXYLIC acids see CARBOXYLIC

preparation of OXOCOMPOUNDS

medically administering OXYGEN

OXYGEN tents

respiratory apparatus using OXYGEN

OXYKETONE dyes

culture of OYSTERS

harvesting of OYSTERS

knives with openers for OYSTERS

air-conditioning including OZONISING