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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5274132
Kind Code:
U
Application Number:
JP16235275U
Publication Date:
June 02, 1977
Filing Date:
December 01, 1975
Export Citation:
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International Classes:
G03C3/00; G03B17/24; (IPC1-7): G03B17/24; G03C3/00
Domestic Patent References:
JPS5017830A1975-02-25
JPS4946726B11974-12-11