HF

Harry J. Friedenreich

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
📍 Southington, CT: #188 of 315 inventorsTop 60%
🗺 Connecticut: #21,355 of 34,797 inventorsTop 65%
Overall (All Time): #4,040,339 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4469200 Releasable hoistway door safety interlock Robert W. Young 1984-09-04