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Ad showing Corning CRT bulb glass plant
Ad for Mobil lubricants showing Corning CRT glass plant.
Note the text This dramatic operation shows parts of TV tube being joined on Electric Sealing Lathe. Edges of tube parts are softened by gas flame, then sealed by high frequency electric current when glass becomes hot enough to conduct electricity. I didn't know it was, or even could be, done by HF electrical conduction heating. They don't mention if this involves glass frit. |
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