Electric lamp and discharge devices – Cathode ray tube – Envelope
Reexamination Certificate
2006-04-11
2006-04-11
Guharay, Karabi (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Envelope
C313S461000, C220S00210A, C220S00230A
Reexamination Certificate
active
07026752
ABSTRACT:
A body portion of the funnel has a first region of dimension h, the dimension h being measured from the seal edge surface in a direction parallel to a tube axis, and a second region excluding the first region. The second region has a thickness relatively smaller than the thickness of the first region, so that a boundary portion between the two regions forms a stepped portion on the external surface of the body portion.
REFERENCES:
patent: 4030627 (1977-06-01), Lentz
patent: 4483452 (1984-11-01), Blanding et al.
patent: 4686415 (1987-08-01), Strauss
patent: 6680567 (2004-01-01), Sugawara et al.
patent: 2003/0025439 (2003-02-01), Fujita
patent: 49-123262 (1974-11-01), None
patent: 59-189541 (1984-10-01), None
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patent: 63-250046 (1988-10-01), None
patent: 3-103548 (1991-10-01), None
patent: 03-236142 (1991-10-01), None
patent: 07-320661 (1995-12-01), None
Kakigi Hiroshi
Kyono Masaya
Guharay Karabi
J.C. Patents
Nippon Electric Glass Co. Ltd.
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