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
CA787867A
Inventor
R. D'arnaud Gerkens Dirk
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.)
Nibbit Products Association Ltd
Original Assignee
Nibbit Products Association Ltd
Publication date
Application grantedgrantedCritical
Publication of CA787867ApublicationCriticalpatent/CA787867A/en