Filament structure and method of making such structure
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United States of America Patent
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Nov 27, 1990
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N/A
app pub date -
Jul 24, 1989
filing date -
Oct 27, 1986
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Expired
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Abstract
A method of making an axial filament structure for a lamp in which the filament is concentric with the axis of the envelope, wherein a hook-like shape (131) is formed in a support member (117) which stretches the filament to its final turns-per-inch ratio.
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