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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4939439
Kind Code:
U
Application Number:
JP8013472U
Publication Date:
April 06, 1974
Filing Date:
July 06, 1972
Export Citation:
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International Classes:
G03D3/00; G03D13/04; G03D15/02; (IPC1-7): G03D3/00; G03D15/02
Domestic Patent References:
JPS256573Y1