Granted Patent
Utility
US 5,337,428 · App. 07/961,427
Adjustable bed with mechanical jack
Inventors:
Bernard Krauska, Randy Wisniewski, Warren J. Peterson
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Oct 15, 1992
Inventors
Bernard Krauska
Randy Wisniewski
Warren J. Peterson
Assignee (at issue)
Joerns Healthcare Limited
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.