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.)
ELLEN BERTHA ALLEN
RALPH S ALLEN
Original Assignee
ELLEN BERTHA ALLEN
RALPH S ALLEN
Publication date
Application grantedgrantedCritical
Publication of CA420001ApublicationCriticalpatent/CA420001A/fr