Granted Patent
Utility
US 5,480,228 · App. 08/283,414
Mixer systems
Inventors:
Jeffrey S. Gambrill, William F. Hutchings, Stephen L. Markle, Marlin D. Schutte, John M. Palmer, III
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Aug 1, 1994
Inventors
Jeffrey S. Gambrill
William F. Hutchings
Stephen L. Markle
Marlin D. Schutte
John M. Palmer, III
Assignee (at issue)
Federal Signal Corporation
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.