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
CA234,499A
Inventor
William A. Holmes
John R. Sharp
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.)
Polaroid Corp
Original Assignee
Polaroid 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
Priority claimed from CA160,407Aexternal-prioritypatent/CA988339A/en
Application filed by Polaroid CorpfiledCriticalPolaroid Corp
Priority to CA234,499ApriorityCriticalpatent/CA993241A/en
Application grantedgrantedCritical
Publication of CA993241ApublicationCriticalpatent/CA993241A/en