Granted Patent
Utility
US 6,434,219 · App. 09/912,229
Chopper wheel with two axes of rotation
Inventors:
Peter J. Rothschild, Lee Grodzins
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Jul 24, 2001
Inventors
Peter J. Rothschild
Lee Grodzins
Assignee (at issue)
American Science and Engineering, 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.