Granted Patent
Utility
US 5,645,142 · App. 08/228,605
Wedge braking system for multi-stage lifts
Inventors:
Matthew G. Kraemer, Richard M. Curtin, Paul Smith
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Apr 18, 1994
Inventors
Matthew G. Kraemer
Richard M. Curtin
Paul Smith
Assignee (at issue)
GENIE INDUSTRIES, 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.