Granted Patent
Utility
US 5,427,450 · App. 08/314,184
Apparatus and method for in-place cleaning of a mixer
Inventor:
Jeffrey S. Gambrill
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Sep 28, 1994
Inventor
Jeffrey S. Gambrill
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.