Julian P. Trangsrud

RP Royal Concrete Pipe: 8 patents #1 of 3Top 35%

RS Royal Environmental Systems: 6 patents #1 of 6Top 20%

📍 Northfield, MN: #4 of 168 inventorsTop 3%

🗺 Minnesota: #1,949 of 52,454 inventorsTop 4%

Overall (All Time): #124,863 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–30 of 30 patents

Patent #	Title	Co-Inventors	Date
6206609	Extension for a canal bed liner	—	2001-03-27
D420891	Stabilizing ground anchor	—	2000-02-22
5752787	Base of a manhole having a canal-bed liner	—	1998-05-19
5720579	Ground anchor	—	1998-02-24
5322386	Ground anchor device	—	1994-06-21