Granted Patent
Utility
US 5,285,009 · App. 07/722,872
Electrical floor box
Inventors:
Timothy S. Bowman, J. David Harmon
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: Jun 28, 1991
Inventors
Timothy S. Bowman
J. David Harmon
Assignee (at issue)
BUTLER MANUFACTURING COMPANY
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.