JH

John W. Helander

UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #3,710,213 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

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