Document Type and Number:
Japanese Patent JPS4834533
Kind Code:
A
Application Number:
JP6939871A
Publication Date:
May 19, 1973
Filing Date:
September 07, 1971
Export Citation:
International Classes:
G03B19/18; G03B7/00; G03B7/10; G03B7/26; G03B17/00; G03B17/02; (IPC1-7): G03B7/10
Domestic Patent References:
JPS458897Y1 | 1970-04-25 | |||
JP38022193A | ||||
JPS448846Y1 | 1969-04-10 | |||
JP46025816U |