DA

David D. Apfel

LP L&L Products: 2 patents #21 of 58Top 40%
📍 Attica, MI: #17 of 45 inventorsTop 40%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,166,279 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

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