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
CA686147A
Inventor
Joseph W. Richardson, 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.)
DELTA-STAR ELECTRIC DIVISION
ELECTRIC SERVICE WORKS
HK Porter Co Inc
Original Assignee
DELTA-STAR ELECTRIC DIVISION
ELECTRIC SERVICE WORKS
HK Porter Co Inc
Publication date
Application grantedgrantedCritical
Publication of CA686147ApublicationCriticalpatent/CA686147A/en