Document Type and Number:
Japanese Patent JPS5359824
Kind Code:
U
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Application Number:
JP14289476U
Publication Date:
May 22, 1978
Filing Date:
October 23, 1976
Export Citation:
International Classes:
G03B15/02; G03B15/03; G03B15/05; (IPC1-7): G03B15/03
Domestic Patent References:
JPS5169844U | 1976-06-02 | |||
JP31000918A |
Foreign References:
US3374342A | 1968-03-19 |