Document Type and Number:
Japanese Patent JPH0120411
Kind Code:
B2
Inventors:
IZAWA RYOJI
Application Number:
JP6136885A
Publication Date:
April 17, 1989
Filing Date:
March 26, 1985
Export Citation:
Assignee:
SEIWA MFG
International Classes:
G02C5/14; G02C13/00
Next Patent: JPH0120412