Walter R. Hallen

EN Envirex: 1 patents #27 of 52Top 55%

RG Rexnord Gmbh: 1 patents #91 of 207Top 45%

📍 Oconomowoc, WI: #177 of 386 inventorsTop 50%

🗺 Wisconsin: #17,084 of 40,088 inventorsTop 45%

Overall (All Time): #2,321,859 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4902304	Separate low pressure gas storage system	—	1990-02-20
4732290	Load isolating gas well	—	1988-03-22