DR

Donald R. Ritzenthaler

GM Gulf Eastern Manufacturing: 3 patents #8 of 102Top 8%
📍 Reedsburg, WI: #17 of 67 inventorsTop 30%
🗺 Wisconsin: #13,258 of 40,088 inventorsTop 35%
Overall (All Time): #1,682,970 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4381431 Hand set timer Thomas J. Bottelson 1983-04-26
4378543 Latch relay with manual reset and test Craig H. Melter 1983-03-29
4220937 Electromechanical relay with manual override control 1980-09-02