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
CA688350A
Inventor
J. Clancy John
Drougas John
W. Lovering David
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.)
William Zinsser and Co Inc
Original Assignee
William Zinsser and Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA688350ApublicationCriticalpatent/CA688350A/en