Granted Patent
Utility
US 4,842,453 · App. 06/935,288
Guide apparatus for drilling oblique holes
Inventors:
James Raines, Harry E. Coleman
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Nov 26, 1986
Inventors
James Raines
Harry E. Coleman
Assignee (at issue)
West Products
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.