HH

Heiko Hoft

PH Phoenix: 2 patents #40 of 153Top 30%
Overall (All Time): #2,204,317 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6592296 Sealing assembly for tunnel construction sections Holger Gutschmidt, Dieter Kassel 2003-07-15
6471138 Electrically insulating rail system Helmuth Blank, Bernd Pahl 2002-10-29