Title:
METHOD OF PROCESSING HOLES OF PLATE MATERIAL
Document Type and Number:
Japanese Patent JPS52141475
Kind Code:
A
Inventors:
UENO KEISUKE
SUGIYAMA SEN
SUGIYAMA SEN
Application Number:
JP5776776A
Publication Date:
November 25, 1977
Filing Date:
May 21, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
B23P9/02; (IPC1-7): B23P9/02