Patents per Year
Top Inventors at Witteman & Co All Time
Showing 1–29 of 29 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Jan Verschoor | 18 |
| 2 | Henricus Gijsbertus Johannes Verduin | 4 |
| 3 | Aart Wijnhout | 2 |
| 3 | Cornelius Kools | 2 |
| 3 | Petrus Thomas Damen | 2 |
| #6 | Ard van Klaveren | 1 |
| #6 | Nicolaas Petrus Geerlings | 1 |
| #6 | Adam Hummel | 1 |
| #6 | Betty Ann Addison | 1 |
| #6 | Bob D. Brown | 1 |
| #6 | Dick Degenhardt | 1 |
| #6 | Dirck Scholten | 1 |
| #6 | Gert van Buren | 1 |
| #6 | Helmut Stade | 1 |
| #6 | Hendrik Jan van den Top | 1 |
| #6 | Hubertus Jozef Maria Vink | 1 |
| #6 | Joannis Jacobus Petrus Nouws | 1 |
| #6 | Marcus Adrianus van Kesteren | 1 |
| #6 | Marcus Wilhelmus Gerardus van Noort | 1 |
| #6 | Peter Van Delft | 1 |
| #6 | Peter van Steijn | 1 |
| #6 | Piet Zonneveld | 1 |
| #6 | Richard E. Davis | 1 |
| #6 | Cornelis Petrus Maria van Ostaayen | 1 |
| #6 | Diana van der Maat | 1 |
| #6 | Pieter van Manen | 1 |
| #6 | Cornelis Rietvink | 1 |
| #6 | Val Farrell | 1 |
| #6 | Nico Wigchert | 1 |