Document Type and Number:
Japanese Patent JPS51121055
Kind Code:
U
Application Number:
JP3724275U
Publication Date:
October 01, 1976
Filing Date:
March 20, 1975
Export Citation:
International Classes:
G03B19/18; G03B17/00; G03B23/02; (IPC1-7): G03B17/00; G03B23/02
Domestic Patent References:
| JPS49131431A | 1974-12-17 | |||
| JP48075643B |
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