HD

Hendrik Dolfsma

SD Skf Industrial Trading & Development: 3 patents #1 of 12Top 9%
📍 Nieuwegein, NL: #18 of 142 inventorsTop 15%
Overall (All Time): #892,323 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5083462 Process and device for detecting defects in moving parts having a central rotating shaft Karel N. Vermeiren 1992-01-28
5008623 Method and apparatus for testing balls with the use of eddy currents Hendrik van Engelenburg 1991-04-16
4854748 Shaft bearing assembly Antonio Gabelli 1989-08-08
4820061 Rolling bearing assembly Jacobus Zwarts 1989-04-11
4511837 Measuring system for measuring the variation of the capacitive impedance of a bearing installed in a housing Karel N. Vermeiren 1985-04-16
4345203 Device for measuring the lubrication of surfaces rolling or sliding relative to each other and lubricated with a lubricant Karel N. Vermeiren, Rutgerus S. Heemskerk 1982-08-17