Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KKfiledCriticalSeiko Epson Corp
Priority to JP8329076ApriorityCriticalpatent/JPS539159A/en
Publication of JPS539159ApublicationCriticalpatent/JPS539159A/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
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.
COPYRIGHT: (C)1978,JPO&Japio
JP8329076A1976-07-131976-07-13Processing of shell of case for portable watch
PendingJPS539159A
(en)