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Document Type and Number:
Japanese Patent JPS5063769
Kind Code:
U
Application Number:
JP11642173U
Publication Date:
June 10, 1975
Filing Date:
October 08, 1973
Export Citation:
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International Classes:
E01H12/00; (IPC1-7): E01H12/00
Domestic Patent References:
JPS4122052Y11966-11-01
JPS3633739Y1



 
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