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.)
HALLWELL WILLIAM S
HARRISON SAFETY BOILER WORKS
Original Assignee
HALLWELL WILLIAM S
HARRISON SAFETY BOILER WORKS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HALLWELL WILLIAM S, HARRISON SAFETY BOILER WORKSfiledCriticalHALLWELL WILLIAM S
Application grantedgrantedCritical
Publication of CA100909ApublicationCriticalpatent/CA100909A/fr