Login| Sign Up| Help| Contact|

Patent Searching and Data


Document Type and Number:
Japanese Patent JPS6343268
Kind Code:
Y2
Application Number:
JP18503283U
Publication Date:
November 11, 1988
Filing Date:
November 30, 1983
Export Citation:
Click for automatic bibliography generation   Help
International Classes:
F16H1/32; E21B3/00; E21B3/02; E21B4/04; (IPC1-7): E21B3/02