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.)
Heumann Ludwig and Co GmbH
Original Assignee
Heumann Ludwig and Co GmbH
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 Heumann Ludwig and Co GmbHfiledCriticalHeumann Ludwig and Co GmbH
Priority to CA345,046ApriorityCriticalpatent/CA1102803A/fr
Application grantedgrantedCritical
Publication of CA1102803ApublicationCriticalpatent/CA1102803A/fr