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.)
Expired
Application number
CA619946A
Inventor
J. Sylvest Karl
Original Assignee
FLSmidth and Co AS
Publication date
Application grantedgrantedCritical
Publication of CA619946ApublicationCriticalpatent/CA619946A/en