DS

Donald D. Savard

IL Interprovincial Pipe Line: 2 patents #1 of 1Top 100%
📍 Edmonton, CA: #3 of 61 inventorsTop 5%
Overall (1989): #28,768 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4885044 Method of controlling hardness of pipe weld-joints by radially inserting insulating rings prior to tempering heat-treatment — 1989-12-05
4875615 Vapor plug for temporarily sealing or plugging a pipeline — 1989-10-24