Jan A. De Greef

DB De Greef'S Wagen-, Carrosserie-En Machinebouw B.V: 1 patents #8 of 16Top 50%

📍 Tricht, NL: #5 of 11 inventorsTop 50%

Overall (All Time): #2,330,635 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4830195	High speed mechanical weighing system	—	1989-05-16
4411366	Device for grading products	—	1983-10-25