Granted Patent
Utility
US 5,501,256 · App. 08/276,697
Chipper knife
Inventors:
Daniel R. Dyer, James R. Sparks
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Jul 18, 1994
Inventors
Daniel R. Dyer
James R. Sparks
Assignee (at issue)
U.S. Natural Resources, Inc.
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.