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.)
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.)
Crawford Door Co
Original Assignee
Stephen S Katulski
Crawford Door Co
Publication date
Application grantedgrantedCritical
Publication of CA409642ApublicationCriticalpatent/CA409642A/fr