Document Type and Number:
Japanese Patent JPS5210329
Kind Code:
Y2
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Application Number:
JP3678971U
Publication Date:
March 05, 1977
Filing Date:
May 07, 1971
Export Citation:
International Classes:
G10K9/12; B06B1/00; B06B1/04; G10K9/13; G10K9/15; (IPC1-7): B06B1/00