Granted Patent
Utility
US 4,742,738 · App. 06/738,462
Machine adjustable boring bar assembly and method
Inventor:
Kevin O. Strand
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: May 28, 1985
Inventor
Kevin O. Strand
Assignee (at issue)
Erickson Tool Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.