Granted Patent
Utility
US 4,862,868 · App. 07/205,041
Rotary dressing roller and method and apparatus for dressing cup-shaped grinding wheels
Inventors:
Harry D. Dodd, Harry Pedersen
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: May 31, 1988
Inventors
Harry D. Dodd
Harry Pedersen
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.