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 US00190251Aexternal-prioritypatent/US3816978A/en
Application filed by American Air Filter CofiledCriticalAmerican Air Filter Co
Priority to DK247878ApriorityCriticalpatent/DK140685B/da
Publication of DK247878ApublicationCriticalpatent/DK247878A/da
Publication of DK140685BpublicationCriticalpatent/DK140685B/da
Application grantedgrantedCritical
Publication of DK140685CpublicationCriticalpatent/DK140685C/da