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EP0762146A1
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Seismic sensor
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CA2099798A1
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Vibrator, attached to a vehicle, to produce seismic vibrations
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DE4313773C1
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Method for monitoring a region by means of measuring external potential
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DE4235963C1
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Procedure for monitoring an area
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Hydrophone, process for its manufacture and use
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DE4239955C1
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Device with vibrator attached to a vehicle for generating seismic vibrations
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Method for improvement of seismic sections
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Marine seismic streamer
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METHOD AND MEASURING ARRANGEMENT FOR MARINE-ICE MIXED DATA ACQUISITION WITH STRINGERS BROUGHT FROM A SHIP
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Multipole plug
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Method and device for echometric measurement of a subterranean cavern
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SU1429950A3
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Aerial device
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Method and device for measuring a vehicle course with high accuracy and for true direction finding on a moving vehicle
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ATA86884A
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Drill hole measuring device
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Drill hole measuring device.
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Borehole probe
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METHOD AND DEVICE FOR NAVIGATING SHIPS
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Method for measuring the two-way radio-frequency delay
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Method and device for determining the direction of incidence of electromagnetic waves
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DE3308559A1
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DRILL HOLE MEASURING DEVICE
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