DH

David C. Humphreys

TP Tamko Building Products: 2 patents #1 of 4Top 25%
📍 Joplin, MO: #2 of 16 inventorsTop 15%
🗺 Missouri: #272 of 2,250 inventorsTop 15%
Overall (2017): #160,218 of 506,227Top 35%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9821532 Peel and stick waterproofing material Michael Shifferd 2017-11-21
9534378 Peel and stick waterproofing material Steven L. Russell, Michael Shifferd 2017-01-03