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 |
| SAMSON |
| SAVOY |
| SCHICKERLING |
| SEA GULL |
| SHEPERD |
| SHERATON |
| SHIELDPLATE |
| SICTE |
| SILVERTONE |
| SILVERTRON |
| SIMPLEX |
| SINGER |
| SJ1-DETECTOR |
| SKY SWEEPER |
| SODION |
| SODIUM |
| SOLODYNE |
| SONATRON |
| SONGBIRD |
| SONORA |
| SOVEREIGN A.C. |
| SPARTON |
| SPEED |
| STANDARD |
| STAR |
| STRONGSON |
| STURDY |
| SUNLIGHT |
| SUPER AIRLINE |
| SUPERTHEON |
| SUPERTRON |
| SYLFAN |
| SYLVANIA |
| SYNTRON |
| Schrack |
| SVENSKA RADIO AB |
| SCHOTT |
| SIEMENS |
| STANDARD TELEPH. & CABLES |
| SIX SIXTY |
| S.I.F. |
| S.F.R. |
| SATOR |
| SPLENDOR |
| S.E.R. |
| SIEMENS & HALSKE |
| SEDDIG |
| SCHOTTKY |
| SOTRON |