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
CA659755A
Inventor
C. F. Kessler Jacob
R. Spreeuwers Harm
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.)
Onderzoekings Instituut Research
Original Assignee
Onderzoekings Instituut Research
Publication date
Application grantedgrantedCritical
Publication of CA659755ApublicationCriticalpatent/CA659755A/en