Document Type and Number:
Japanese Patent JPS5347821
Kind Code:
U
Application Number:
JP10930777U
Publication Date:
April 22, 1978
Filing Date:
August 16, 1977
Export Citation:
International Classes:
G03B23/02; G03B31/00; (IPC1-7): G03B31/00; G03B23/02
Domestic Patent References:
| JP18010678Y1 | ||||
| JPS41132Y1 |