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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register CofiledCriticalNCR Corp
Publication of ES375703A2publicationCriticalpatent/ES375703A2/es
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Saccharide Compounds
(AREA)
ES375703A1969-01-211970-01-20Un metodo de preparacion de ftalidas cromogenas, fundamen- talmente incoloras o ligeramente coloreadas.
ExpiredES375703A2
(es)