DB

Douglas R. Batchelor

LB Libman Broom: 2 patents #2 of 2Top 100%
📍 Buchanan, MI: #1 of 4 inventorsTop 25%
🗺 Michigan: #263 of 3,452 inventorsTop 8%
Overall (1989): #28,964 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4862550 Roller mop sponge retainer 1989-09-05
D302759 Wringer sponge mop 1989-08-08