WB

Willem Coenraad Bergwerf

HB Hadewe B.V.: 2 patents #8 of 22Top 40%
📍 Drachten, NL: #126 of 272 inventorsTop 50%
Overall (All Time): #2,248,905 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5983609 Method and apparatus for opening an envelope Jeichienus A. van der Werff 1999-11-16
5899050 Method and apparatus for filling and closing envelopes — 1999-05-04