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FR2632975A1
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Installation for applying a protective coating on articles by immersion in molten metal
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FR2549234A1
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Method and device for producing transverse seismic waves
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FR2542452A1
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Electrodynamic seismic pulse generator
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FR2456422A1
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Vibration motor with multistage converter for ultrasonic frequency - has cone-shaped contact surface of drive stage forming clutch for rotor
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FR2456421A1
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Vibration motor with multistage converter for ultrasonic frequency - has cone-shaped contact surface of drive stage forming clutch for rotor
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FR2233134A1
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Pulse generator for machining metals by spark erosion - switchable oscillating charge and discharge circuits control pulse parameters
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