Document Type and Number:
Japanese Patent JPS52123541
Kind Code:
U
Application Number:
JP3245376U
Publication Date:
September 20, 1977
Filing Date:
March 17, 1976
Export Citation:
International Classes:
B21D39/02; B21D19/12; B21D53/86; (IPC1-7): B21D39/02; B21D19/12; B21D53/86