Document Type and Number:
Japanese Patent JPS50146548
Kind Code:
U
Application Number:
JP7270374U
Publication Date:
December 04, 1975
Filing Date:
June 20, 1974
Export Citation:
International Classes:
G03B31/00; G03B31/02; (IPC1-7): G03B31/02
Domestic Patent References:
| JPS5135236U | 1976-03-16 |