Title:
METHOD OF FORMING COUNTER SINK ON METALLIC PLATE
Document Type and Number:
Japanese Patent JPS51116488
Kind Code:
A
Abstract:
PURPOSE: To form a counter sink without back indentation by a plastic working of metallic plate particularly thin plate.
Inventors:
TERASAWA YOSHIO
Application Number:
JP4158875A
Publication Date:
October 13, 1976
Filing Date:
April 05, 1975
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
B26F1/14; B21D28/24; B21D28/34; (IPC1-7): B21D28/34
Domestic Patent References:
| JPS5171868A | 1976-06-22 |