2xTRIODE
Inventory NumberVT3839
ClassificationVacuum Tube
Maker
Columbia Broadcasting System
founded 1927
Columbia Electronics Sales Company, Div. of Columbia Broadcasting System, Inc..
Object number: VT4841
Columbia Electronics Sales Company, Div. of Columbia Broadcasting System, Inc..
Object number: VT4842
Columbia Broadcasting System
Date: dated 1946
Accessories: wooden frame
Object number: 1991-1-0005
Mutual Broadcasting System
Date: 1948
Object number: 1998-1-1713
Swedish Broadcasting Corporation
Date: dated 1961
Object number: WJ0661
T. C. Psychological Laboratory, Columbia University
Date: circa 1920
Object number: WJ1167
Columbia Phonograph Company
Date: circa 1904
Accessories: hollow, cylindrical, paper case
Object number: 8507
