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.)
Walter Theodore Bulson George Robert Hartranft And Leonard Nixon Ray, Jr
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.)
Armstrong World Industries Inc
Original Assignee
Armstrong Cork 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.)
Publication date
Priority claimed from US05/612,773external-prioritypatent/US4007003A/en
Application filed by Armstrong Cork CofiledCriticalArmstrong Cork Co
Application grantedgrantedCritical
Publication of AU1761576ApublicationCriticalpatent/AU1761576A/en
Publication of AU483393B2publicationCriticalpatent/AU483393B2/en