RK

Rolf Kalthoff

BA Barmag Ag: 2 patents #58 of 165Top 40%
Overall (All Time): #2,335,707 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4731217 Method for melt spinning thermoplastic filament yarn Siegmar Gerhartz, Siegfried Putsch 1988-03-15
4697753 Stepped precision winding process Heinz Schippers, Seigmar Gerhartz 1987-10-06