PD

Petrus J. A. M. Derks

U.S. Philips: 2 patents #21 of 532Top 4%
Overall (1982): #9,317 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4348610 Camera tube with graded tellurium or arsenic target Jan Dieleman, Joannes H. J. van Dommelen 1982-09-07
4319159 Camera tube selenium target including arsenic increasing in concentration from radiation side Joannes H. J. van Dommelen, Jan Dieleman 1982-03-09