Granted Patent
Utility
US 5,505,239 · App. 08/404,357
Blade arrangement and blade holder for chipper
Inventor:
James R. Sparks
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Mar 14, 1995
Inventor
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.