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
CA672902A
Inventor
J. Burmeister Albert
Willard D. Brown, Jr.
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.)
Richards Wilcox Manufacturing Co
Original Assignee
Albert J Burmeister
Richards Wilcox Manufacturing Co
Publication date
Application grantedgrantedCritical
Publication of CA672902ApublicationCriticalpatent/CA672902A/en