JH

John W. Helander

UN Unknown: 1 patents #206 of 2,107Top 10%
📍 Tulsa, OK: #17 of 116 inventorsTop 15%
🗺 Oklahoma: #137 of 631 inventorsTop 25%
Overall (1997): #128,793 of 185,788Top 70%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5603451 Aesthetic thermostat David C. Baumann, Chean F. Fong, Mark Szewczul 1997-02-18