Granted Patent
Utility
US 5,116,095 · App. 07/642,198
Apparatus for lifting heavy equipment
Inventor:
John E. Kotrla
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Jan 16, 1991
Inventor
John E. Kotrla
Assignee (at issue)
Baroid Technology, 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.