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Aladin Arcturus CeCo Cunningham Crosley (DeForest) Deforest EverReady Farad Hytron Ken Rad Majestic (Early) Majestic Marathon Miller Not actually a valve box, this originally held a tuning coil. Mullard Montgomery Ward OK Perryman Philips (Australia) Philips (French) Philips (Dutch) circa 1925 Philips 1924 / Philips 1926 Philips 1927-29 / Philips 1931-37 Philips 1936-45 / Philips 1950-89 Rad Tel Radio Technique RCA Cunningham / RCA HMV RCA Radiotron RCA Radiotron RCA (Early) Shieldplate Silver Tone (Early) Silver Tone Sylvania Trail Blazer UreCo Zenith