Granted Patent
Utility
US 4,878,787 · App. 07/258,345
Coarse/fine adjustment boring head
Inventor:
Carl E. Hunt
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Oct 17, 1988
Inventor
Carl E. Hunt
Assignee (at issue)
GTE Valenite Corporation
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.