HG

Hubertus Augustinus Leonardus Maria De Graaf

KN Koninklijke Ptt Nederland N.V.: 1 patents #49 of 160Top 35%
Overall (All Time): #3,718,054 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5639183 Installing cable-ducts Willem Griffioen, Cornelis Casparus Van Bijsterveld 1997-06-17