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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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FR889819A1962-03-021962-03-02
Improvement in the manufacture of shaped parts such as cylinders, cones, by means of bands comprising textile materials
ExpiredFR81247E
(en)
Improvements in the cylinders used in the machines that apply to the tiles of labrados textiles (Machine-translation by Google Translate, not legally binding)