David John Knecht

CC Crane Plastics Company: 1 patents #21 of 49Top 45%

CS Crane Plastics Siding: 1 patents #3 of 7Top 45%

📍 Johnstown, OH: #16 of 48 inventorsTop 35%

🗺 Ohio: #23,384 of 73,341 inventorsTop 35%

Overall (All Time): #1,547,901 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
8608203	Spray prevention device	John Anthony Downes	2013-12-17
6516577	Exterior panel	Paul R. Pelfrey	2003-02-11
6223488	Vented siding	Paul R. Pelfrey	2001-05-01