RG

Rodger P. Grantham

VT Vapor Systems Technologies: 1 patents #1 of 3Top 35%
📍 Springfield, MO: #8 of 36 inventorsTop 25%
🗺 Missouri: #483 of 1,865 inventorsTop 30%
Overall (2025): #238,294 of 469,880Top 55%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12391540 Pressure/vacuum (PV) valve for fuel storage tanks, in-line pressure-vacuum valve test unit, and combination thereof Douglas Alan Harty, Gregg Marshel 2025-08-19