Spencer Jr., Kenneth H. Trademarks
DUWL CHECK
Kits for us in the testing and evaluating of water line bacterial and bio film comprised of vials with dropper caps, environmental…
Owned by: Spencer Jr., Kenneth H.
Serial Number: 78004921
DUWL SOLUTION
a solution for remediation of environmental bacteria in water lines
Owned by: Spencer Jr., Kenneth H.
Serial Number: 78004922
