Document Type and Number:
Japanese Patent JPS5255941
Kind Code:
U
Application Number:
JP13992275U
Publication Date:
April 22, 1977
Filing Date:
October 14, 1975
Export Citation:
International Classes:
B21C3/02; B21C3/00; B21C3/16; B21C37/06; B21C37/15; B21D31/04; B21D39/20; B21D51/16; F16L9/18; (IPC1-7): B21C3/00; B21C37/15; B21D31/04; B21D51/16; F16L9/18
Domestic Patent References:
| JPS387467Y1 | ||||
| JPS4842707U | 1973-06-01 | |||
| JPS49135873A | 1974-12-27 |