DL

David Langenfeld

VM Vermeer Manufacturing: 3 patents #111 of 366Top 35%
📍 Pella, IA: #98 of 257 inventorsTop 40%
🗺 Iowa: #4,661 of 15,303 inventorsTop 35%
Overall (All Time): #1,510,636 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9435161 Latching rod box Russel Novelo, Michael D. Belloma, Ryan P. Roberts, Lucas Laverman, Ward E. Ryon 2016-09-06
5941320 Directional boring machine Gregg Austin, Peter C. Rozendaal 1999-08-24
5556253 Automatic pipe-loading device Peter C. Rozendaal 1996-09-17