X-ray tube
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United States of America Patent
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Feb 25, 2003
Issued Date -
N/A
app pub date -
Jan 8, 2001
filing date -
Jul 9, 1998
priority date (Note) -
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Abstract
An X-ray tube 1 includes spacer 8 which is cylindrical so it does not block electrons 80 directed from a grid electrode 72 toward a focusing electrode 25, and which has one end 8b fixed to the grid electrode 72 and the other end 8c abutting against the focusing electrode 25. The distance between the grid electrode 72 and focusing electrode 25 is set to a predetermined distance by the spacer 8.
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