Document Type and Number:
Japanese Patent JPS5287788
Kind Code:
U
Application Number:
JP17139175U
Publication Date:
June 30, 1977
Filing Date:
December 18, 1975
Export Citation:
International Classes:
E04F13/04; B21D31/04; B21D53/00; B21F27/00; E04F13/00; (IPC1-7): B21D53/00; B21F27/00; E04F13/00
Domestic Patent References:
| JP15013388Y1 | ||||
| JPS354229Y1 |