Robert E. Petersen

📍 Walcott, IA: #2 of 13 inventorsTop 20%

🗺 Iowa: #3,757 of 15,303 inventorsTop 25%

Overall (All Time): #1,288,218 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
5622205	Check valve having reserved mechanical closure	—	1997-04-22
4637425	Sewer check valve with cutting seat	—	1987-01-20
PP5570	"Pear tree ""San Joaquin"""	—	1985-10-08
4257628	Pipe connector and hole cutter	—	1981-03-24