[ INSTRUMENTS FOR SEISMIC SURVEYING-NAMELY, TOWING ASSEMBLIES FOR TOWING AIR GUNS BEHIND VESSELS FOR MARINE SEISMIC SURVEYING, MARINE PROFILING SYSTEMS, ] DOWN HOLE SEISMIC ENERGY SOURCES FOR USE IN SEISMIC SURVEYING, LAND SEISMIC SYSTEMS FOR USE IN SEISMIC SURVEYING ON LAND, HYDROPHONE STREAMERS FOR TOWING BEHIND VESSELS FOR MARINE SEISMIC SURVEYING, FIRING CONTROLS FOR FIRING AIR GUNS AND PREAMPLIFIER FILTERS FOR USE IN SEISMIC SURVEYING

'air':11,56 'assembl':8 'behind':13,46 'control':53 'energi':25 'filter':60 'fire':52,55 'gun':12,57 'hole':23 'hydrophon':42 'instrument':1 'land':32,41 'marin':16,19,49 'name':6 'preamplifi':59 'profil':20 'seismic':3,17,24,30,33,38,50,64 'sourc':26 'streamer':43 'survey':5,18,31,39,51,65 'surveying-nam':4 'system':21,34 'tow':7,10,45 'use':28,36,62 'vessel':14,47

[ HIGH PRESSURE AIR SUPPLIES AND COMPRESSORS FOR SUPPLYING HIGH PRESSURE AIR FOR USE IN SEISMIC SURVEYING ]

'air':3,11 'compressor':6 'high':1,9 'pressur':2,10 'seismic':15 'suppli':4,8 'survey':16 'use':13

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