In 1953, a Corning Glass executive illustrates "studs" protruding from the newly developed glass funnel, or bulb, for a 15GP22 tricolor CRT.
The Set: Pete Deksnis's Site about the CT-100
Restoring a Vintage Color Television Set
A second exec holds the faceplate with its phosphor-dot plate/shadow mask assembly. The studs align the faceplate assembly and the funnel before they are bonded together.