Röhrenmarken / Tube Brands noch in Arbeit / still under construction
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| PACKARD |
| PARAMOUNT |
| PEERLESS |
| PEERTRON |
| PERFECTRON |
| PERMATRON |
| PERRYMAN |
| PHILCO |
| PHILOTRON |
| PHONOTRON |
| PILOTRON |
| PINGREE |
| PLAYTRON |
| POWERTONE |
| PREMIER |
| PURATRON |
| POPE |
| PRESSLER |
| PENTON |