Inventor
SHAFFER WILLIAM V
US10 patents
⚠️ This page may combine multiple inventors who share the name “SHAFFER WILLIAM V”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PSA INC
4 patentsUS7413382B2Aug 19, 2008
Coupler for leaching chamber systems
PSA INC13 citations92
US7160059B2Jan 9, 2007
Adjustable angle coupler for leaching chamber systems
PSA INC15 citations92
US6592293B1Jul 15, 2003
Adjustable angle coupler for leaching chamber systems
PSA INC25 citations92
US8002497B2Aug 23, 2011
Coupler for leaching chamber systems
PSA INC8 citations83
ADVANCED DRAINAGE SYST
4 patentsUS7306264B2Dec 11, 2007
Pipe having a water-tight in-line bell
ADVANCED DRAINAGE SYST21 citations92
US6948718B2Sep 27, 2005
Gasket
ADVANCED DRAINAGE SYST22 citations92
US7331582B2Feb 19, 2008
Gasket
ADVANCED DRAINAGE SYST10 citations83
US7988438B2Aug 2, 2011
Extrusion die vacuum seals
ADVANCED DRAINAGE SYST4 citations60