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The exhibit is an experimental Westinghouse Pliotron from the William White GE museum collection, Schenectady, New York. Tyne collection.
Thanks to Joe Gruber for sending the images.
The balloon envelope is 35 mm in diameter and, excluding the UV base pins, is 101 mm tall.
Reference: Joe Gruber. Type Pliotron was first introduced in 1915.


Updated March 07, 2020.
shape:balloon construction:pinch type:triode age:pre.1920 base:uv pins:4 pin:
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