Document Type and Number:
Japanese Patent JPS5147238
Kind Code:
U
Application Number:
JP12008374U
Publication Date:
April 08, 1976
Filing Date:
October 04, 1974
Export Citation:
International Classes:
G03B7/081; G03B7/083; G03B17/20; (IPC1-7): G03B17/18; G03B19/12
Domestic Patent References:
| JP39008136A | ||||
| JP40025948A | ||||
| JPS4121320Y1 | 1966-10-19 | |||
| JP49103444B |