Granted Patent
Utility
US 5,454,757 · App. 08/328,292
Interchangeable gears for damper assemblies
Inventor:
Kevin L. Wirfel
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Oct 24, 1994
Inventor
Kevin L. Wirfel
Assignee (at issue)
Johnson Service 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.