201A_UV-base

USA - Tubes designated in the USA Aerodyn Company; New York City (NY) Airtron, H. & H. Radio Co.; Newark, NJ Alltron (tube brand), Allan Manufacturing Co.; Arlington and Harrison, NJ Amertron = Tube brand Amplitron = Tube brand Apex, Radio Tube Corporation; Newark, NJ Arion, Electric Sales Company; Newark, NJ Atlantic Electric Lamp Company; Danvers, MA Audiotron, (tube brand) Bear Radio Products Corp.; New Jersey Belltone = Tube brand Birk-Morton Vacuum Products Co. Inc. (B-M); Owensboro (KY) Blue Streak (tubes) - see also Curtis Leger Co.; Chicago, IL Buck (tube brand) CeCo (tubes), C.E. Mfg. Co. Inc.; Providence, RI Clearatone (tubes), Radio Tube Laboratory; New York City, NY Comet (tube brand) Diamond Electric (Specialties) Corp.; Newark, NJ and Chicago, IL D-Lux Blue (tube brand) Dollar Tube Co.; Newark, NJ Duraco (tubes), Duratron Products Corp.; Union City, NJ Echotron (tubes); (where ?) Electron Mfg. Co.; Berkeley, CA Elektron (tubes), Lectrodio Corp.; Lynn, MA Eurekatron (tubes), Imperial Merchandise Co.; Perry, OH Everest Manufacturing Co.; Central Falls, RI Fearnola (tubes) Fields, Henry; Shenandoah, IA GEM Tube Co.; New York City, NY Globe Electric Co. (Kleer-Tone); Newark, NJ Gold-Tone Radio Company; New York City, NY Grandtone, F. & W. Grand (5-10-15 cent stores); (where?) Hercules, Lincoln Radio Tube Co.; New York, NY Hyvac; Newark Keystone Electric & Radio Co.; New York, NY Kwik-lite (Kwiklite), Usona Manufacturing Co.; Toledo, OH Leader, The Tube Company; Springfield, MA Live-Tone (tube brand), Royal Electric Co.; Boston, MA Loudspeaker (tube brand), James H. Konkle; Newark, NJ Mastertone Radio Co.; Newark, NJ Milo (tube brand) Monotron, Paxton & Gallagher Co.; Omaha, NE Murdon Appliance Co.; New York City, NY Myers, E.B. Ltd.; Cleveland (Myers4) Novotron, Radio Electric Laboratories; New York City, NY Nutone (tubes); (Where ?) NU-TRO, C. A. W. Laboratories; Philadelphia, PA Nutron Manufacturing Co.; Passaic, N.J. Pingree Radio Sevice Co., Inc.; Boston, MA Radiodyne (Tube brand) RadiOtune; (Where ?) Reflex, Denning Radio Manufacturers; Newark, NJ Regal Products Corp. (Regaltone, Regal-Tone); Philadelphia, PA Ritetone; (Where ?) Rolls Royce Tube Co.; Newark, NJ Royalfone, Royal Electrical Laboratories; Newark, NJ Ry-Tone; (Where ?) Silvertron, New York Radio Co; New York, NY Songbird (brand) Speed, Cable Radio Tube Corp. / Cable Supply Co.; New York and Brooklyn, NY Star Radio Tube Co.; Chicago, IL Star (tube brand) - made in Holland Sturdy Engineering Corp.; Chicago, IL Supertron Manufacturing Co. Inc.; Hoboken, NJ Testeed Products Co.; Cleveland, OH Thoria Tube Co.; Middletown, OH Trio-Tron, Audio Supply Co.; Farrell, PA Ureco, United Radio and Electric Co.; Newark (NJ) and Brooklyn (NY) Voltron (tubes), O. Herschkowitz; Newark, NY Volutron (tube brand) Yankee Tube Corp.; Newark, NJ Zenith (tubes), Duratron Radio Tube Corp.; New Jersey