Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392121 | Receiver for A.C. electrical supply signalling arrangement | Frederick M. Gray | 1983-07-05 |
CL
Charles G. Leedham
Overall (All Time): #4,054,111 of 4,157,543Top 100%
1
Patents All Time