 |
 |
 |
|---|---|---|
| RCA Cnningham | RCA | RCA |
 |
 |
 |
| RCA | RCA | RCA |
 |
 |
 |
|---|---|---|
| ZENITH | SYLVANIA | CANADIAN MARCONI |
 |
 |
 |
| GENERAL ELECTRIC | GENERAL ELECTRIC | GENERAL ELECTRIC |
 |
 |
 |
| KEN-RAD | RAYTHEON | RAYTHEON |
 |
 |
 |
| GENERAL ELECTRIC | KEN-RAD | FORDOM |
 |
 |
 |
| RCA Order WE | CHINA | マツダ（東芝） |
 |
 |
 |
| MULLARD | FIVRE | VISSEAUX |
