DH

David Hartman

IL Industrial Thermo Polymers Limited: 2 patents #2 of 4Top 50%
📍 Saranac, MI: #1 of 1 inventorsTop 100%
🗺 Michigan: #358 of 4,492 inventorsTop 8%
Overall (1997): #43,075 of 185,788Top 25%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D385591 Play structure Steven Hartman, Michael J. White, Jr. 1997-10-28
D377813 Playhouse Steven Hartman, Michael J. White, Jr. 1997-02-04