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
CA631821A
Inventor
Richard G. Rittenhouse
Bernard C. Thurman
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.)
BERNARD C THURMAN
Original Assignee
BERNARD C THURMAN
Publication date
Application grantedgrantedCritical
Publication of CA631821ApublicationCriticalpatent/CA631821A/en