FR971987A -
Special tube cable, gas hyper-compression; with method and devices for use, for the simultaneous transport, or not, of electric current and gas
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Special tube cable, gas hyper-compression; with method and devices for use, for the simultaneous transport, or not, of electric current and gas
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FR971987D1940-12-051940-12-05
Special tube cable, gas hyper-compression; with method and devices for use, for the simultaneous transport, or not, of electric current and gas
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