Document Type and Number:
Japanese Patent JPS5118822
Kind Code:
B1
Application Number:
JP8945969A
Publication Date:
June 12, 1976
Filing Date:
November 08, 1969
Export Citation:
International Classes:
G03B23/12; G03B23/08; (IPC1-7): G03B23/08
Domestic Patent References:
| JP44089458A | ||||
| JP17007706Y1 |