NITROGEN oxides

other inorganic compounds of NITROGEN

NITROSO compounds

NITROSO dyes

NITROUS acid

esters of NITROUS acid

preparation of esters of NITROUS acid

NITROUS oxide

NOBLE gases; compounds thereof

NOBLE metals see also METAL(S)

alloys based on NOBLE metals

obtaining or refining NOBLE metals

obtaining or refining NOBLE metals electrolytically

absorbing or reflecting road or railway traffic NOISE

ground installations for reducing aircraft NOISE

producing audible NOISE see SOUND(S)

reducing NOISE by insulating building structures see also INSULATION

reducing NOISE in air-conditioning, air humidification, ventilation, air-screening

reducing NOISE in amplifiers

reducing NOISE in electric machines

reducing NOISE in recording or reproducing systems

reducing NOISE in signal or communication transmission systems

reducing NOISE of railway rails

roads designed to reduce NOISE

speech enhancement in NOISE

speech recognition in NOISE

NOISE absorbers for pipes or pipe systems

generating NOISE currents or voltages

reducing NOISE in television recording

NON-ALCOHOLIC beverages

metals or alloys see also METAL(S), ORES

heat treatment of NON-FERROUS metals or alloys

general methods of or devices for heat treatment of NON-FERROUS metals or alloys

inorganic compounds of NON-FERROUS metals

modifying physical structure of NON-FERROUS metals or alloys

organic compounds containing NON-FERROUS metals

pretreatment of NON-FERROUS ores for producing metals

producing compounds of NON-FERROUS metals by metallurgical processes

producing or refining NON-FERROUS alloys

producing or refining NON-FERROUS alloys by electrolytic processes

producing or refining NON-FERROUS alloys by electrothermal processes

producing or refining NON-FERROUS metals

producing or refining NON-FERROUS metals by electrolytic processes

producing or refining NON-FERROUS metals by electrothermal processes

NON-LINEAR operation of transformers or inductances

diffusion processes for extracting NON-METALS from iron or steel

organic compounds containing sulfur, selenium, or tellurium

organic compounds containing sulfur, selenium, or tellurium wherein sulfur is within a ring

organic compounds containing sulfur, selenium, silicon or tellurium wherein selenium or tellurium is within a ring

NON-SLIP paving

NON-SLIP staircases

NON-SLIP treatment of slippery road surfaces

NON-WOVEN fabrics

18- NORSTEROIDS; 19- NORSTEROIDS

artificial NOSE(S) [= prostheses]

baths for NOSE(S)

examining NOSE(S)

NOSE(S) clips for respirators

NOSE(S) filters for breathing protection

NOSE(S) rings for animals

music NOTATION

NOTCHING marginal portions of sheet material in general

currency NOTES see CURRENCY

discharging- NOZZLES of containers

extrusion NOZZLES for plastics or substances in a plastic state

filling- NOZZLES for fuel dispensing apparatus

fluid dynamics of NOZZLES

NOZZLES for burners

NOZZLES for fire-fighting

NOZZLES for recording measured values

NOZZLES for suction cleaners

injection NOZZLES for plastics or substances in a plastic state

suction NOZZLES for fluid transport

measuring NUCLEAR radiation

NUCLEAR magnetic resonance

NUCLEAR reactors

recording by NUCLEAR radiation

preparing NUCLEIC by microbiological processes

NUMBERING of tickets

NUMERALS used for display

NUMERALS used for education

brassieres for NURSING -mothers

NURSING appliances

cap NUT(S)

clinch NUT(S)

cutting screw threads in NUT(S) see THREADING

die NUT(S)

making die NUT(S) see DIES

locking of NUT(S)

machines for screwing-up or unscrewing NUT(S)

making NUT(S)

making NUT(S) by forging, pressing or hammering

making NUT(S) by processing sheet metal, metal tubes or profiles

making NUT(S) by rolling

making NUT(S) by working in conjunction with thread cutting

making NUT(S) from metal powder

NUT(S) for pipe joints

NUT(S) for screw mechanisms

self cutting NUT(S)

wrenches for screwing-up or unscrewing NUT(S)

machines for cleaning, blanching, drying or roasting NUT(S)

machines for hulling, husking or cracking NUT(S)

NUT(S) butter

NUT(S) crackers

NUTMEG graters

NUTMEG mills