FL

Francis R. Laurion

DR Duro-Last Roofing: 2 patents #2 of 4Top 50%
📍 Vassar, MI: #11 of 38 inventorsTop 30%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,326,493 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4963219 Method of making and assembling roof edge structures incorporated with single-ply polymer-coated fabric roof structures Wayne G. Nichols, John C. Greko 1990-10-16
4848045 Roof edge structures incorporated with single-ply polymer-coated fabric roof structures, and methods of making and assembling them Wayne G. Nichols, John C. Greko 1989-07-18