Document Type and Number:
Japanese Patent JPS5759617
Kind Code:
B2
Inventors:
OGURO TOMOKATSU
SHIBUYA MASAMICHI
SHIBUYA MASAMICHI
Application Number:
JP10874274A
Publication Date:
December 15, 1982
Filing Date:
September 24, 1974
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01J7/24; H01J23/00; H01J25/50