Process and a device for hydrodynamic sound pulse generation in
Process and device for seismic prospecting of a medium with indu
Process and devices for producing pressure - or shear-waves in a
Process for filling a muffler and muffler filled with...
Process for filling a muffler shell with fibrous material
Process for manufacturing an absorption muffler
Process for producing sound absorber and produced by the...
Process for production of tube profile element with swaged...
Process for seismic exploration by means of a directive source
Process for the preparation of films or diaphragms for acoustic
Product provided with sound damping element
Production logging mechanism for across-the-borehole measurement
Production process for custom-moulded ear-plug devices
Projectile powered piston
Protecting system for roadway adjacent areas
Protection by underwater sound waves
Protective acoustic cover assembly
Protective anc loudspeaker membrane
Protective cover assembly having enhanced acoustical characteris
Protective cover for a contact surface for a stethoscope