Granted Patent
Utility
US 6,702,383 · App. 09/986,737
Electric lifting cushion
Inventors:
Duncan Newman, Michael A. Knappers
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Nov 9, 2001
Inventors
Duncan Newman
Michael A. Knappers
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.