Granted Patent
Utility
US 4,589,628 · App. 06/620,436
Unitary bearing and locator assembly for rotatable valves
Inventors:
James E. Barker, James C. Hadley
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Jun 14, 1984
Inventors
James E. Barker
James C. Hadley
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.