Granted Patent
Utility
US 5,117,853 · App. 07/550,735
Portable shade structures employing non-snag hooks
Inventor:
Martin E. Pruesner
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Jul 9, 1990
Inventor
Martin E. Pruesner
Assignee (at issue)
Gale Group, 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.