GJ

Gwen V. Janssen

📍 Edmond, OK: #5 of 19 inventorsTop 30%
🗺 Oklahoma: #151 of 749 inventorsTop 25%
Overall (1989): #109,231 of 140,708Top 80%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4881616 Hearing aid retention apparatus Roy C. Rowland 1989-11-21