Document Type and Number:
Japanese Patent JPH0452652
Kind Code:
B2
Inventors:
FUKUSHIMA ISAO
Application Number:
JP8471382A
Publication Date:
August 24, 1992
Filing Date:
May 21, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G11B5/035; G11B5/03; H03F3/45; H03H19/00