Granted Patent
Utility
US 5,990,441 · App. 08/986,468
Damper tube closure
Inventors:
Daniel P. Zaenglein, Eric J. Roszman, Craig Thomas Lehman
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Dec 8, 1997
Inventors
Daniel P. Zaenglein
Eric J. Roszman
Craig Thomas Lehman
Assignee (at issue)
General Motors LLC
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.