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
CA593593A
Inventor
Kardos Otto
P. Neumann Robert
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.)
Hanson Van Winkle Munning Co
Original Assignee
Hanson Van Winkle Munning Co
Publication date
Application grantedgrantedCritical
Publication of CA593593ApublicationCriticalpatent/CA593593A/en