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Methods of Construction/Bulb Shape
 
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Acorn
Balloon
Classic
Thin Glass Tube
Thin Metal Tube
Wide Glass Tube
Wide Metal Tube
End Window
Side Window
Co-axial
Planar
Pinch
Catkin
Glass Disc
All Glass
Disc Seal (Glass)
Disc Seal (Ceramic)
Nuvistor
Silica
Any exhibit shown in Italic leads to an equivalent valve type.

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