DS

David L. Schardt

HA H-Tech Ag: 3 patents #5 of 61Top 9%
HI Hayward Industries: 1 patents #97 of 138Top 75%
I( Inter-City Products Corporation (Usa): 1 patents #12 of 29Top 45%
Overall (All Time): #1,030,722 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D574938 Heat exchanger David P. Martin, Gang Li 2008-08-12
6321833 Sinusoidal fin heat exchanger Timothy P. O'Leary, Brady A. Mills, Vance Elliot Willis 2001-11-27
6082993 Induced draft heater with premixing burners Timothy P. O'Leary, Vance Elliot Willis 2000-07-04
6026804 Heater for fluids Kendall R. Carter, John M. Stallins, Charles E. Taylor 2000-02-22
5186528 Removable access panels for rooftop unit Lois A. Luna, Ivor S. Jones 1993-02-16