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.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
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
Priority claimed from US06/051,462external-prioritypatent/US4277949A/en
Application filed by Air Products and Chemicals IncfiledCriticalAir Products and Chemicals Inc
Priority to CA377,133ApriorityCriticalpatent/CA1132898A/fr
Application grantedgrantedCritical
Publication of CA1132898ApublicationCriticalpatent/CA1132898A/fr