Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4645992 | Electronically controlled servomotor limit stop | — | 1987-02-24 |
| 4639720 | Electronic sketch pad | William P. Rympalski, James S. Herstein | 1987-01-27 |
RR
Roger L. Ritenour
Sperry: 1 patents #355 of 841Top 45%
Overall (All Time): #2,340,609 of 4,157,543Top 60%
2
Patents All Time