Hansruedi Spiess

VR Von Roll: 1 patents #1 of 3Top 35%

📍 Delémont, CH: #1 of 6 inventorsTop 20%

Overall (1994): #128,232 of 165,921Top 80%

Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5340232	Manhole cover	Francois Galvanetto	1994-08-23