AJ

Albert S. Janni

DR Duro-Last Roofing: 2 patents #1 of 4Top 25%
📍 Saginaw, MI: #2 of 42 inventorsTop 5%
🗺 Michigan: #263 of 3,452 inventorsTop 8%
Overall (1989): #31,440 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4872296 Corner pieces for single-ply polymer-coated fabric core roof membranes and the product thereby formed — 1989-10-10
4799986 Method of fabricating polymer-coated fabric outside corner pieces for single-ply polymer-coated fabric core roof membranes — 1989-01-24