Document Type and Number:
Japanese Patent JPS50151145
Kind Code:
A
Application Number:
JP5904374A
Publication Date:
December 04, 1975
Filing Date:
May 25, 1974
Export Citation:
International Classes:
G03B13/36; G02B7/36; G03B3/00; (IPC1-7): G02B7/11; G03B3/00
Domestic Patent References:
| JPS4737634A |