| 2522957 | Triangular signal generator | |||
| 2529161 | Register control system | |||
| 2602151 | Triangular wave generator | |||
| 2695955 | Sweep circuit | |||
| 2794979 | Means for detecting improper sky wave synchronization | |||
| 2806651 | Pulse amplitude analyzer | |||
| 2840371 | Automatic correction device | |||
| 2840372 | Automatic control system | |||
| 2853609 | Multivibrator hold off circuit | |||
| 2871350 | Delay sweep circuit | |||
| 2877416 | Phase measuring circuit arrangements |