Document Type and Number:
Japanese Patent JPS50105451
Kind Code:
U
Application Number:
JP1494074U
Publication Date:
August 29, 1975
Filing Date:
February 05, 1974
Export Citation:
International Classes:
G03B7/083; G03B9/62; G03B17/18; (IPC1-7): G03B7/08; G03B9/62; G03B17/18