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09-11-2004, 09:25 PM

Sandy G

Spiteful Old Cuss

Join Date: May 2003

Location: Rogersville, Tennessee

Posts: 9,571

Apparently. Sez here that Philco made preproduction quantities of a 21" tube for evaluation around '56. While the results were technically satisfactory, the timing was wrong as the shadow mask tube was becoming well-entrenched & apparently Philco disbanded their efforts. Sony fooled around w/beam-index tubes in 1981 as well.-Sandy G.

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