1n4742A 1W Zener Diode 12V Inline Glass Stabilizer Tube Glass Seal Do-41 Zener Diode
EF 41, Tube EF41; Röhre EF 41 ID719, Vacuum Pentode | Radiomuseum.org
EZ 41, Tube EZ41; Röhre EZ 41 ID3271, Full-Wave Vacuum Recti | Radiomuseum.org
EBC41 Datasheet | Duodiode-Triode
Type 41-23 Universal Pressure Reducing Valve - SAMSON - PDF Catalogs | Technical Documentation | Brochure
List of vacuum tubes - Wikipedia
UBC41 datasheet(4/11 Pages) PHILIPS | DUODIODE TRIODE
EBC41 Datasheet | Duodiode-Triode
Vacuum Tube Magic Comes To The 741 | Hackaday
blog dds: 2016.05.07 - The Computer Tube
EL 41, Tube EL41; Röhre EL 41 ID347, Vacuum Pentode | Radiomuseum.org
41, Tube 41; Röhre 41 ID2968, Vacuum Pentode | Radiomuseum.org
UY 41, Tube UY41; Röhre UY 41 ID432, Half-Wave Vacuum Rectif | Radiomuseum.org
ECH 41, Tube ECH41; Röhre ECH 41 ID2494, Triode-Hexode | Radiomuseum.org
41, Tube 41; Röhre 41 ID2968, Vacuum Pentode | Radiomuseum.org
EL41 Datasheet, Output Pentode.
Sanicro® 41 — Alleima
SM5CBW - Tubedata
AZ41 Datasheet, Rectifying Valve.
Philips EL41
Can playing loud music for long periods of time damage tubes in an amplifier? - Quora
41 @ The Valve Museum
EF41 Datasheet PDF - Datasheet4U.com
41, Tube 41; Röhre 41 ID2968, Vacuum Pentode | Radiomuseum.org
