Document Type and Number:
Japanese Patent JPS52109122
Kind Code:
U
Application Number:
JP1621176U
Publication Date:
August 19, 1977
Filing Date:
February 14, 1976
Export Citation:
International Classes:
A01C11/00; A01C11/02; A01C23/02; (IPC1-7): A01C11/02; A01C23/02