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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International Business Machines Corp
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International Business Machines Corp
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Application filed by International Business Machines CorpfiledCriticalInternational Business Machines Corp
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Publication of DE655164CpublicationCriticalpatent/DE655164C/de
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