Glass bulb for a cathode ray tube and a method for producing a cathode ray tube
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United States of America Patent
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May 7, 2002
Issued Date -
N/A
app pub date -
Dec 12, 2000
filing date -
Jun 9, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Manufacturing steps for a cathode ray tube or a glass bulb for the cathode ray tube are controlled in such a manner that a two-dimensional matrix code 3 comprised of a plurality of dots is marked by laser in an outer side surface of a glass bulb 1, 5, the two-dimensional matrix code 3 containing the information which can identify individually glass bulbs, and the manufacturing steps are conducted by using a computer and the particulars specified by the serial information.
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