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
CA 20107
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.)
HAROLD W WILIAMS
DONALD H YOUNG
Original Assignee
HAROLD W WILIAMS
DONALD H YOUNG
Publication date
Priority to CA 20107priorityCriticalpatent/CA20107S/en
Application grantedgrantedCritical
Publication of CA20107SpublicationCriticalpatent/CA20107S/en