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.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP7319876ApriorityCriticalpatent/JPS52156487A/en
Publication of JPS52156487ApublicationCriticalpatent/JPS52156487A/en
Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Abstract
PURPOSE: To simultaneously press an upper and lower sharp-edged cutting blades like knives into both sides of a resin plate and to perforate the plate at high working accuracy and in a manner suitable for mass production.
COPYRIGHT: (C)1977,JPO&Japio
JP7319876A1976-06-231976-06-23Resin plate punching process
PendingJPS52156487A
(en)