Granted Patent
Utility
US 5,966,846 · App. 09/047,821
Two-piece impeller
Inventors:
Clarence L. Harms, Edward A. Raleigh, Daniel R. Bullis, Jr., Knute Alstad
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Mar 25, 1998
Inventors
Clarence L. Harms
Edward A. Raleigh
Daniel R. Bullis, Jr.
Knute Alstad
Assignee (at issue)
Ariens Co.
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.