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
CA13492F
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 William A
Original Assignee
Crawford William A
Publication date
Priority to CA13492FpriorityCriticalpatent/CA13492S/en
Application grantedgrantedCritical
Publication of CA13492SpublicationCriticalpatent/CA13492S/en