DS

Douglas James Spenner

LM Lomont Molding: 3 patents #4 of 10Top 40%
📍 Sac City, IA: #9 of 24 inventorsTop 40%
🗺 Iowa: #4,661 of 15,303 inventorsTop 35%
Overall (All Time): #1,632,824 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D416630 Reinforcing bar protection cap Jerry D. Schimmelpfennig, Marcus William Powell, Richard Sylvan 1999-11-16
D416631 Reinforcing bar protection cap Jerry D. Schimmelpfennig, Marcus William Powell, Richard Sylvan 1999-11-16
5884443 Concrete reinforcing bar protective cover Jerry D. Schimmelpfennig, Marcus William Powell, Richard Sylvan 1999-03-23