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 Tampella Oy AbfiledCriticalTampella Oy Ab
Priority to FI0836/68ApriorityCriticalpatent/FI43532B/fi
Priority to US791937*Aprioritypatent/US3591452A/en
Priority to SE00675/69Aprioritypatent/SE361690B/xx
Priority to GB7588/69Aprioritypatent/GB1243746A/en
Application grantedgrantedCritical
Publication of FI43532BpublicationCriticalpatent/FI43532B/fi