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.)
FREDERICK T ISAACSON
PAUL J ISAACSON
Original Assignee
FREDERICK T ISAACSON
PAUL J ISAACSON
Publication date
Application grantedgrantedCritical
Publication of CA527680ApublicationCriticalpatent/CA527680A/fr