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
CA610802A
Inventor
O. Reynolds Alfred
W. Snyder Charles
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.)
RALPH A SPENGLER
Original Assignee
RALPH A SPENGLER
Publication date
Application grantedgrantedCritical
Publication of CA610802ApublicationCriticalpatent/CA610802A/en