Document Type and Number:
Japanese Patent JPS50105452
Kind Code:
U
Application Number:
JP1346974U
Publication Date:
August 29, 1975
Filing Date:
February 02, 1974
Export Citation:
International Classes:
G03B23/04; G03B21/00; (IPC1-7): G03B21/00
Domestic Patent References:
| JP40028827A |