Granted Patent
Utility
US 5,152,606 · App. 07/559,107
Mixer impeller shaft attachment apparatus
Inventors:
Dominic Borraccia, Jeffrey S. Gambrill, Walter C. Webster, Jonathan C. Everdyke
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Jul 27, 1990
Inventors
Dominic Borraccia
Jeffrey S. Gambrill
Walter C. Webster
Jonathan C. Everdyke
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.