GH

Gero Herrmann

DW Dyckerhoff & Widmann: 3 patents #15 of 81Top 20%
Overall (All Time): #1,296,769 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5238329 Mine roof support system Lawrence E. Long, Klaus M. Langeneckert 1993-08-24
5056284 Bundled tensioning member for prestressing a tall structural member and method of installing same Franz Ruckdeschel, Reinhard Klockner, Dieter Jungwirth 1991-10-15
4718209 Wedge anchorage for a tension member in a prestressed concrete structure Per C. Hansen 1988-01-12
4694623 Closed ring-shaped reinforcing member for a concrete structure 1987-09-22