Login| Sign Up| Help| Contact|

Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0156847
Kind Code:
B2
Inventors:
YAMAMOTO HIROYASU
NAKAYAMA TADASHI
NOZAWA TADAO
Application Number:
JP15174782A
Publication Date:
December 01, 1989
Filing Date:
September 02, 1982
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL CORP
International Classes:
B21D13/04; C22C38/04; H01F1/16



 
Next Patent: JPH0156848