Granted Patent
Utility
US 5,643,139 · App. 08/631,035
Contoured landing surface system and method of making thereof
Inventors:
Roger Neal Stout, Troy Robinson
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jun 1, 1995
Inventors
Roger Neal Stout
Troy Robinson
Assignee (at issue)
Sport Supply 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.