Title:
PROCESSING OF SHELL OF CASE FOR PORTABLE WATCH
Document Type and Number:
Japanese Patent JPS539159
Kind Code:
A
Abstract:
PURPOSE: To achieve the improvement in working efficiency and the saving of resources by injecting water, oil and air, etc. in a high energy state to the surface of the thin metal plate placed between dies or to the inside of a metal pipe or blind hole metal tube.
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Inventors:
HAYANO KIJIYUUROU
Application Number:
JP8329076A
Publication Date:
January 27, 1978
Filing Date:
July 13, 1976
Export Citation:
Assignee:
SUWA SEIKOSHA KK
International Classes:
G04B37/22; G04B37/00; (IPC1-7): G04B37/00
Next Patent: PATTERNING METHODOF WATCH CASE