Document Type and Number:
Japanese Patent JPS5213671
Kind Code:
Y2
Application Number:
JP9619971U
Publication Date:
March 28, 1977
Filing Date:
October 18, 1971
Export Citation:
International Classes:
B24B21/00; B24B21/04; B24B23/06; (IPC1-7): B24B23/06; B24B21/04