Document Type and Number:
Japanese Patent JPS63128659
Kind Code:
U
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Application Number:
JP2075787U
Publication Date:
August 23, 1988
Filing Date:
February 17, 1987
Export Citation:
International Classes:
H01J29/89; H01J7/26; H01J31/10; (IPC1-7): H01J29/89; H01J7/26; H01J31/10