Document Type and Number:
Japanese Patent JPS5332738
Kind Code:
U
Application Number:
JP10930877U
Publication Date:
March 22, 1978
Filing Date:
August 16, 1977
Export Citation:
International Classes:
G03B31/00; (IPC1-7): G03B31/00
Domestic Patent References:
| JPS41132Y1 | ||||
| JP17012481Y1 |