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Description
Two glass tubes connected at a right angle, one of uranium glass (yellow). The uranium tube has 8-pin loctal socket. The other tube has 4 flying leads and a fifth wire attached at the center of the tube. Appears to be an experimental tube for Sylvania to test patent no. 2,200,911 for sealed lead-in wire for "cathode tubes and the like." On glass: Sylvania mark and logo; "VG-1A Distillation Products Inc. Pat. No. 2,200,911" and "57".
Type
image
Identifier
12D401DF-A51E-434B-A4D6-917435435157 2003-1-875
Subject
Vacuum-tubes Nineteen thirties Experiments Patents Cathode ray tubes
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