NP

Norman R. Preston

📍 Kitchener, CA: #4 of 23 inventorsTop 20%
Overall (1989): #72,576 of 140,708Top 55%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4821766 Toilet tank fill valve — 1989-04-18