Document Type and Number:
Japanese Patent JPS4956942
Kind Code:
U
Application Number:
JP9857172U
Publication Date:
May 20, 1974
Filing Date:
August 25, 1972
Export Citation:
International Classes:
G03C11/00; (IPC1-7): G03C11/00
Domestic Patent References:
| JPH06749U | 1994-01-11 | |||
| JP11012944U | ||||
| JP33005482A |