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F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
F16L9/00—Rigid pipes
F16L9/17—Rigid pipes obtained by bending a sheet longitudinally and connecting the edges
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Mechanical Engineering
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FR1082181D1953-08-061953-08-06Pièces métalliques embouties ou conformées à deux ou plusieurs épaisseurs, notamment éléments de carrosserie et tuyaux
ExpiredFR1082181A
(fr)