RH

Ralph Heinzen

📍 Garrison, ND: #1 of 4 inventorsTop 25%
🗺 North Dakota: #220 of 2,395 inventorsTop 10%
Overall (All Time): #659,371 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
7405818 Self monitoring static seal with optical sensor 2008-07-29
6615639 Self monitoring static seal 2003-09-09
6595523 Self monitoring mechanical seal 2003-07-22
5785323 Seal with electrical conductor wear indicator 1998-07-28
5540448 Seal with electrical conductor wear indicator 1996-07-30
5246235 Seal with embedded wire 1993-09-21
4826197 Trailer with automatic boat docker 1989-05-02
4625662 Towable transplanter 1986-12-02