DL

David Grant Lingnau

📍 Calgary, CA: #77 of 622 inventorsTop 15%
Overall (2021): #168,843 of 548,734Top 35%
2
Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11072036 Concentric welded pipes with condition monitoring capability and method of manufacture 2021-07-27
10926350 Integrated heat treatment apparatus and method for autogenous welding 2021-02-23