Devices for detecting, recording, and displaying signals, namely, medical instruments for detecting, recording, processing, and displaying three-dimensional images of biological anatomy

Installation, construction, maintenance, upkeep and repair of scientific apparatus and instruments of measuring, signaling, checking, supervision apparatus and instruments for the acquisition, processing, imaging and interpretation of geophysical, namely, seismic, magnetic, electromagnetic, gravimetric, and radiometric data and geological data with a view to the researching, exploration, exploitation, surveillance and optimization of natural resources, namely, hydrocarbon and gas pools; drilling of wells, overseeing of construction work with a view to the researching, exploration, exploitation, surveillance and optimization of natural resources, namely, hydrocarbon and gas pools; construction and maintenance of oil and gas pipelines; construction, plastering and cement work for installations in the geophysical, namely, seismic, magnetic, electromagnetic, gravimetric, and radiometric fields and geological field