Document Type and Number:
Japanese Patent JPS52167423
Kind Code:
U
Application Number:
JP7639576U
Publication Date:
December 19, 1977
Filing Date:
June 14, 1976
Export Citation:
International Classes:
B21D1/00; B21D1/06; B21D1/10; B23K31/00; B23K37/00; B23P9/04; B25D9/00; (IPC1-7): B21D1/10; B23K37/00; B25D9/00