Granted Patent
Utility
US 5,176,367 · App. 07/656,585
Stackable spring assemblies with formed wire spring modules
Inventors:
William C. Rodgers, Arval W. Barnes, Sr.
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Feb 19, 1991
Inventors
William C. Rodgers
Arval W. Barnes, Sr.
Assignee (at issue)
Hoover Limited
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.