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.)
CALUMET AND HECLA CORP
Original Assignee
CALUMET AND HECLA CORP
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 CALUMET AND HECLA CORPfiledCriticalCALUMET AND HECLA CORP
Priority to ES1969146378UpriorityCriticalpatent/ES146378Y/es
Publication of ES146378UpublicationCriticalpatent/ES146378U/es
Application grantedgrantedCritical
Publication of ES146378YpublicationCriticalpatent/ES146378Y/es