| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | United States | 4 | |
| #3 | Germany | 2 | |
| #4 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Telecommunications | |
| #3 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Radio navigation | |
| #2 | Multiplex communication | |
| #3 | Automatic control of oscillations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Krajewski Zdzistaw A A | 8 |
| #2 | Krajewski Zdzislaw A A | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA1159972A | 2-wire frequency division multiplex system | |
| CA1159934A | Cancellation of group delay error by dual speed of rotation | |
| CA1159933A | Phase directional antenna array and phased ring combiner for radio direction finding | |
| US4198633A | Electronic signal processing system | |
| CA1052870A | Electronic signal processing system |