Document Type and Number:
Japanese Patent JPS63176258
Kind Code:
U
Application Number:
JP6829187U
Publication Date:
November 15, 1988
Filing Date:
May 06, 1987
Export Citation:
International Classes:
H01J29/76; (IPC1-7): H01J29/76
Domestic Patent References:
JP61157256B | ||||
JPS4836172U | 1973-04-28 |