Ulrich Welkener

WC W.R. Grace & Co.-Conn.: 1 patents #61 of 188Top 35%

📍 Seevetal, DE: #2 of 11 inventorsTop 20%

Overall (1994): #55,440 of 165,921Top 35%

Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5300194	Pitch control	Thord Hassler	1994-04-05