DA

David D. Apfel

LP L&L Products: 2 patents #21 of 58Top 40%
Overall (All Time): #2,166,279 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7011315 Expandable pre-formed plug Michael Czaplicki 2006-03-14
6422575 Expandable pre-formed plug Michael Czaplicki 2002-07-23