Granted Patent
Utility
US 6,189,849 · App. 09/073,655
Lift system
Inventors:
Harry C. Sweere, Matthew J. Showalter
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: May 6, 1998
Inventors
Harry C. Sweere
Matthew J. Showalter
Assignee (at issue)
Ergotron, 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.