Document Type and Number:
Japanese Patent JPS55160728
Kind Code:
U
Application Number:
JP5920479U
Publication Date:
November 18, 1980
Filing Date:
May 02, 1979
Export Citation:
International Classes:
B23D21/02; B21D28/28; B23D21/00; (IPC1-7): B23D21/00; B21D28/28
Domestic Patent References:
| JPS5140552U | 1976-03-26 | |||
| JPS51101287A | 1976-09-07 |