Granted Patent
Utility
US 4,485,909 · App. 06/388,342
Multiple stage vibration damper
Inventor:
Sidney U. Gatewood
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Jun 14, 1982
Inventor
Sidney U. Gatewood
Assignee (at issue)
BorgWarner Inc.
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.