1. Patentansprak: Av en plan platremsa framstalld fackverksstang, kannetecknad darav, att stangen pa mitten Or sammantryckt fran sidorna pa sit sdtt. att langsgaende upphojningar uppstatt, son' mot stangens andar averga i den ursprungliga, plana ytan. (Iiitrtill en ritning.) Stockholm 1920. P. A. 1";"orstedt & Sinter.1. Patent claim: A truss bar produced from a flat plate strip, characterized in that the bar in the middle is compressed from the sides of its seat. that longitudinal elevations arose, son 'against the spirits of the rod averge in the original, flat surface. (Iiitrtill a drawing.) Stockholm 1920. P. A. 1 ";" orstedt & Sinter.