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.)
United States Gypsum Co
Original Assignee
United States Gypsum 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
Priority claimed from US06/462,629external-prioritypatent/US4470877A/en
Application filed by United States Gypsum CofiledCriticalUnited States Gypsum Co
Application grantedgrantedCritical
Publication of CA1220904ApublicationCriticalpatent/CA1220904A/fr
CA000445205A1983-01-311984-01-12Papier a charge minerale de sulfate de calcium, et son emploi dans la fabrication des panneaux de placoplatre
ExpiredCA1220904A
(fr)