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Bertram L. Walters

LS Laars Heating Systems: 1 patents #3 of 7Top 45%
Overall (All Time): #3,034,556 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8931438 Condensing gas appliance and condensate trap therefor Richard A. Williamson 2015-01-13