SH

Stephen A. Hamstra

📍 Zeeland, MI: #19 of 64 inventorsTop 30%
🗺 Michigan: #2,033 of 10,747 inventorsTop 20%
Overall (2019): #118,257 of 560,194Top 25%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10387581 System for optimization of building heating and cooling systems 2019-08-20
10180268 Energy chassis and energy exchange device W. Michael Linn 2019-01-15