Granted Patent
Utility
US 4,537,392 · App. 06/617,892
Foldable swing set
Inventor:
William L. Defibaugh
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Jun 6, 1984
Inventor
William L. Defibaugh
Assignee (at issue)
Brown Group Recreational Products, 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.